Fix the ss_free macros

src/utils.c

@@ -263,24 +263,6 @@ ss_aligned_malloc(size_t size)
     }
 }
 
-void
-ss_aligned_free(void *ptr)
-{
-#ifdef __MINGW32__
-    _aligned_free(ptr);
-#else
-    free(ptr);
-#endif
-    ptr = NULL;
-}
-
-void
-ss_free(void *ptr)
-{
-    free(ptr);
-    ptr = NULL;
-}
-
 void *
 ss_realloc(void *ptr, size_t new_size)
 {