The GPU log category ate one of the SDL reserved categories

Fixes https://github.com/libsdl-org/SDL/issues/10739

include/SDL3/SDL_log.h

@@ -92,7 +92,6 @@ typedef enum SDL_LogCategory
     SDL_LOG_CATEGORY_GPU,
 
     /* Reserved for future SDL library use */
-    SDL_LOG_CATEGORY_RESERVED1,
     SDL_LOG_CATEGORY_RESERVED2,
     SDL_LOG_CATEGORY_RESERVED3,
     SDL_LOG_CATEGORY_RESERVED4,