Delete old version files

os.h

@@ -1,11 +0,0 @@
-
-typedef struct OS_Memory{
-  void *data;
-  SizeU commit;
-  SizeU reserve;
-}OS_Memory;
-typedef struct Arena Arena;
-
-function OS_Memory os_reserve(SizeU size);
-function void os_commit(OS_Memory *m, SizeU size);
-function String os_read_file(Arena *arena, String file);