removed Haiku from vendor:directx/dxc package

Signed-off-by: Ignacy Koper <ignacy423@gmail.com>

vendor/directx/dxc/dxcdef_haiku.odin

@@ -1,37 +0,0 @@
-#+build haiku
-package directx_dxc
-import "core:c"
-
-FILETIME :: struct {
-	dwLowDateTime: DWORD,
-	dwHighDateTime: DWORD,
-}
-
-GUID :: struct {
-	Data1: DWORD,
-	Data2: WORD,
-	Data3: WORD,
-	Data4: [8]BYTE,
-}
-
-BYTE            :: distinct u8
-WORD            :: u16
-DWORD           :: u32
-BOOL            :: distinct b32
-SIZE_T          :: uint
-ULONG           :: c.ulong
-CLSID           :: GUID
-IID             :: GUID
-LONG            :: distinct c.long
-HRESULT         :: distinct LONG
-wstring         :: [^]c.wchar_t
-BSTR            :: wstring
-
-IUnknown :: struct {
-	using _iunknown_vtable: ^IUnknown_VTable,
-}
-IUnknown_VTable :: struct {
-	QueryInterface: proc "c" (this: ^IUnknown, riid: ^IID, ppvObject: ^rawptr) -> HRESULT,
-	AddRef:         proc "c" (this: ^IUnknown) -> ULONG,
-	Release:        proc "c" (this: ^IUnknown) -> ULONG,
-}