Revert "Implement BGRA8 framebuffer format"

This reverts commit f6e998f6ad.

Conflicts:
	src/video_core/gpu.h
	src/video_core/surface.cpp

src/video_core/gpu.cpp

@@ -16,7 +16,6 @@ namespace Tegra {
 u32 FramebufferConfig::BytesPerPixel(PixelFormat format) {
     switch (format) {
     case PixelFormat::ABGR8:
-    case PixelFormat::BGRA8:
         return 4;
     case PixelFormat::RGB565:
         return 2;

src/video_core/gpu.h

@@ -81,7 +81,6 @@ struct FramebufferConfig {
     enum class PixelFormat : u32 {
         ABGR8 = 1,
         RGB565 = 4,
-        BGRA8 = 5,
     };
 
     /**

src/video_core/surface.cpp

@@ -408,10 +408,6 @@ PixelFormat PixelFormatFromGPUPixelFormat(Tegra::FramebufferConfig::PixelFormat
     switch (format) {
     case Tegra::FramebufferConfig::PixelFormat::ABGR8:
         return PixelFormat::ABGR8U;
-    case Tegra::FramebufferConfig::PixelFormat::BGRA8:
-        return PixelFormat::BGRA8;
-    case Tegra::FramebufferConfig::PixelFormat::RGB565:
-        return PixelFormat::RGB565U;
     default:
         LOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
         UNREACHABLE();