GPU (Apple): always use metal to detect vmem

Author: CarterLi

src/detection/gpu/gpu_apple.c

@@ -63,10 +63,6 @@ const char* ffDetectGPUImpl(const FFGPUOptions* options, FFlist* gpus)
         ffStrbufInit(&gpu->driver); // Ok for both Apple and Intel
         ffCfDictGetString(properties, CFSTR("CFBundleIdentifier"), &gpu->driver);
 
-        int vram; // Supported on Intel
-        if(!ffCfDictGetInt(properties, CFSTR("VRAM,totalMB"), &vram))
-            gpu->dedicated.total = (uint64_t) vram * 1024 * 1024;
-
         if(ffCfDictGetInt(properties, CFSTR("gpu-core-count"), &gpu->coreCount)) // For Apple
             gpu->coreCount = FF_GPU_CORE_COUNT_UNSET;