libobs: Remove base_set_allocator()

Deprecated in 28.0.

libobs/util/bmem.c

@@ -170,8 +170,3 @@ void *bmemdup(const void *ptr, size_t size)
 
 	return out;
 }
-
-OBS_DEPRECATED void base_set_allocator(struct base_allocator *defs)
-{
-	UNUSED_PARAMETER(defs);
-}

libobs/util/bmem.h

@@ -31,8 +31,6 @@ struct base_allocator {
 	void (*free)(void *);
 };
 
-OBS_DEPRECATED EXPORT void base_set_allocator(struct base_allocator *defs);
-
 EXPORT void *bmalloc(size_t size);
 EXPORT void *brealloc(void *ptr, size_t size);
 EXPORT void bfree(void *ptr);