vim-patch:8.1.1684: profiling functionality is spread out

Problem:    Profiling functionality is spread out.
Solution:   Put profiling functionality in profiling.c. (Yegappan Lakshmanan,
            closes vim/vim#4666)
fa55cfc69d

Move proftime_T to types.h for now to avoid recursive #include.

src/nvim/regexp_defs.h

@@ -15,7 +15,6 @@
 #include <stdbool.h>
 
 #include "nvim/pos.h"
-#include "nvim/profile.h"
 #include "nvim/types.h"
 
 /*