Removed the vi format comments from the source

Vim users can use the [editorconfig plugin](https://github.com/editorconfig/editorconfig-vim) to automatically set tab spacing for the SDL coding style.

Fixes https://github.com/libsdl-org/SDL/issues/6903

src/thread/SDL_systhread.h

@@ -75,5 +75,3 @@ SDL_CreateThreadInternal(int(SDLCALL *fn)(void *), const char *name,
 #endif
 
 #endif /* SDL_systhread_h_ */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/SDL_thread.c

@@ -519,5 +519,3 @@ int SDL_CondWaitTimeout(SDL_cond *cond, SDL_mutex *mutex, Sint32 timeoutMS)
     }
     return SDL_CondWaitTimeoutNS(cond, mutex, timeoutNS);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/SDL_thread_c.h

@@ -102,5 +102,3 @@ extern SDL_TLSData *SDL_Generic_GetTLSData(void);
 extern int SDL_Generic_SetTLSData(SDL_TLSData *data);
 
 #endif /* SDL_thread_c_h_ */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_syscond.c

@@ -217,5 +217,3 @@ int SDL_CondWaitTimeoutNS_generic(SDL_cond *_cond, SDL_mutex *mutex, Sint64 time
 
     return retval;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_syscond_c.h

@@ -34,5 +34,3 @@ int SDL_CondWaitTimeoutNS_generic(SDL_cond *cond, SDL_mutex *mutex, Sint64 timeo
 #endif /* SDL_THREAD_GENERIC_COND_SUFFIX */
 
 #endif /* SDL_syscond_generic_h_ */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_sysmutex.c

@@ -159,5 +159,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doe
     return 0;
 #endif /* SDL_THREADS_DISABLED */
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_sysmutex_c.h

@@ -19,4 +19,3 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 #include "SDL_internal.h"
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_syssem.c

@@ -175,5 +175,3 @@ int SDL_SemPost(SDL_sem *sem)
 }
 
 #endif /* SDL_THREADS_DISABLED */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_systhread.c

@@ -60,5 +60,3 @@ void SDL_SYS_DetachThread(SDL_Thread *thread)
 {
     return;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_systhread_c.h

@@ -22,5 +22,3 @@
 
 /* Stub until we implement threads on this platform */
 typedef int SYS_ThreadHandle;
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/generic/SDL_systls.c

@@ -32,5 +32,3 @@ int SDL_SYS_SetTLSData(SDL_TLSData *data)
 {
     return SDL_Generic_SetTLSData(data);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/n3ds/SDL_syscond.c

@@ -117,5 +117,3 @@ int SDL_CondWaitTimeoutNS(SDL_cond *cond, SDL_mutex *mutex, Sint64 timeoutNS)
 }
 
 #endif /* SDL_THREAD_N3DS */
-
-/* vi: set sts=4 ts=4 sw=4 expandtab: */

src/thread/n3ds/SDL_sysmutex.c

@@ -85,5 +85,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doe
 }
 
 #endif /* SDL_THREAD_N3DS */
-
-/* vi: set sts=4 ts=4 sw=4 expandtab: */

src/thread/n3ds/SDL_sysmutex_c.h

@@ -31,5 +31,3 @@ struct SDL_mutex
 };
 
 #endif /* SDL_sysmutex_c_h */
-
-/* vi: set sts=4 ts=4 sw=4 expandtab: */

src/thread/n3ds/SDL_syssem.c

@@ -116,5 +116,3 @@ int SDL_SemPost(SDL_sem *sem)
 }
 
 #endif /* SDL_THREAD_N3DS */
-
-/* vi: set sts=4 ts=4 sw=4 expandtab: */

src/thread/n3ds/SDL_systhread.c

@@ -139,5 +139,3 @@ void SDL_SYS_DetachThread(SDL_Thread *thread)
 }
 
 #endif /* SDL_THREAD_N3DS */
-
-/* vi: set sts=4 ts=4 sw=4 expandtab: */

src/thread/n3ds/SDL_systhread_c.h

@@ -28,5 +28,3 @@
 typedef Thread SYS_ThreadHandle;
 
 #endif /* SDL_systhread_c_h_ */
-
-/* vi: set sts=4 ts=4 sw=4 expandtab: */

src/thread/ngage/SDL_sysmutex.cpp

@@ -109,5 +109,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doe
 
     return 0;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/ngage/SDL_syssem.cpp

@@ -159,5 +159,3 @@ int SDL_SemPost(SDL_sem *sem)
     sema.Signal();
     return 0;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/ngage/SDL_systhread_c.h

@@ -21,5 +21,3 @@
 #include "SDL_internal.h"
 
 typedef int SYS_ThreadHandle;
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/psp/SDL_syscond.c

@@ -203,5 +203,3 @@ int SDL_CondWaitTimeoutNS(SDL_cond *cond, SDL_mutex *mutex, Sint64 timeoutNS)
 }
 
 #endif /* SDL_THREAD_PSP */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/psp/SDL_sysmutex.c

@@ -144,5 +144,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doe
 }
 
 #endif /* SDL_THREAD_PSP */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/psp/SDL_sysmutex_c.h

@@ -19,4 +19,3 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 #include "SDL_internal.h"
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_syscond.c

@@ -142,5 +142,3 @@ tryagain:
     }
     return retval;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_sysmutex.c

@@ -185,5 +185,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doe
 
     return 0;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_sysmutex_c.h

@@ -29,4 +29,3 @@ struct SDL_mutex
 };
 
 #endif /* SDL_mutex_c_h_ */
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_syssem.c

@@ -182,4 +182,3 @@ int SDL_SemPost(SDL_sem *sem)
 }
 
 #endif /* __MACOS__ */
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_systhread.c

@@ -282,5 +282,3 @@ void SDL_SYS_DetachThread(SDL_Thread *thread)
 {
     pthread_detach(thread->handle);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_systhread_c.h

@@ -23,5 +23,3 @@
 #include <pthread.h>
 
 typedef pthread_t SYS_ThreadHandle;
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/pthread/SDL_systls.c

@@ -63,5 +63,3 @@ int SDL_SYS_SetTLSData(SDL_TLSData *data)
     }
     return 0;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/stdcpp/SDL_syscond.cpp

@@ -139,5 +139,3 @@ SDL_CondWaitTimeoutNS(SDL_cond *cond, SDL_mutex *mutex, Sint64 timeoutNS)
         return SDL_SetError("Unable to wait on a C++ condition variable: code=%d; %s", ex.code(), ex.what());
     }
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/stdcpp/SDL_sysmutex.cpp

@@ -97,5 +97,3 @@ SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doesn't
     mutex->cpp_mutex.unlock();
     return 0;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/stdcpp/SDL_sysmutex_c.h

@@ -26,5 +26,3 @@ struct SDL_mutex
 {
     std::recursive_mutex cpp_mutex;
 };
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/stdcpp/SDL_systhread.cpp

@@ -159,5 +159,3 @@ SDL_SYS_SetTLSData(SDL_TLSData *data)
 {
     return SDL_Generic_SetTLSData(data);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/stdcpp/SDL_systhread_c.h

@@ -22,5 +22,3 @@
 
 /* For a thread handle, use a void pointer to a std::thread */
 typedef void *SYS_ThreadHandle;
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/vita/SDL_syscond.c

@@ -203,5 +203,3 @@ int SDL_CondWaitTimeoutNS(SDL_cond *cond, SDL_mutex *mutex, Sint64 timeoutNS)
 }
 
 #endif /* SDL_THREAD_VITA */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/vita/SDL_sysmutex.c

@@ -140,5 +140,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doe
 }
 
 #endif /* SDL_THREAD_VITA */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/vita/SDL_sysmutex_c.h

@@ -19,5 +19,3 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 #include "SDL_internal.h"
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/vita/SDL_syssem.c

@@ -145,5 +145,3 @@ int SDL_SemPost(SDL_sem *sem)
 }
 
 #endif /* SDL_THREAD_VITA */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/vita/SDL_systhread.c

@@ -131,5 +131,3 @@ int SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
 }
 
 #endif /* SDL_THREAD_VITA */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/vita/SDL_systhread_c.h

@@ -22,5 +22,3 @@
 #include <psp2/types.h>
 
 typedef SceUID SYS_ThreadHandle;
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_syscond_cv.c

@@ -267,5 +267,3 @@ int SDL_CondWaitTimeoutNS(SDL_cond *cond, SDL_mutex *mutex, Sint64 timeoutNS)
 {
     return SDL_cond_impl_active.WaitTimeoutNS(cond, mutex, timeoutNS);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_sysmutex.c

@@ -284,5 +284,3 @@ int SDL_UnlockMutex(SDL_mutex *mutex)
 }
 
 #endif /* SDL_THREAD_WINDOWS */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_sysmutex_c.h

@@ -71,5 +71,3 @@ typedef struct SDL_mutex_cs
 {
     CRITICAL_SECTION cs;
 } SDL_mutex_cs;
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_syssem.c

@@ -395,5 +395,3 @@ int SDL_SemPost(SDL_sem *sem)
 }
 
 #endif /* SDL_THREAD_WINDOWS */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_systhread.c

@@ -211,5 +211,3 @@ void SDL_SYS_DetachThread(SDL_Thread *thread)
 }
 
 #endif /* SDL_THREAD_WINDOWS */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_systhread_c.h

@@ -28,5 +28,3 @@
 typedef HANDLE SYS_ThreadHandle;
 
 #endif /* SDL_systhread_c_h_ */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/thread/windows/SDL_systls.c

@@ -78,5 +78,3 @@ int SDL_SYS_SetTLSData(SDL_TLSData *data)
 }
 
 #endif /* SDL_THREAD_WINDOWS */
-
-/* vi: set ts=4 sw=4 expandtab: */