WebGPUTextures: Remove invalid usage of RGBFormat. (#23205)

examples/jsm/renderers/webgpu/WebGPUTextures.js

@@ -1,6 +1,6 @@
 import { GPUTextureFormat, GPUAddressMode, GPUFilterMode, GPUTextureDimension } from './constants.js';
 import { CubeTexture, Texture, NearestFilter, NearestMipmapNearestFilter, NearestMipmapLinearFilter, LinearFilter, RepeatWrapping, MirroredRepeatWrapping,
-	RGBFormat, RGBAFormat, RedFormat, RGFormat, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, UnsignedByteType, FloatType, HalfFloatType, sRGBEncoding
+	RGBAFormat, RedFormat, RGFormat, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, UnsignedByteType, FloatType, HalfFloatType, sRGBEncoding
 } from 'three';
 import WebGPUTextureUtils from './WebGPUTextureUtils.js';
 
@@ -564,7 +564,6 @@ class WebGPUTextures {
 				formatGPU = ( encoding === sRGBEncoding ) ? GPUTextureFormat.BC3RGBAUnormSRGB : GPUTextureFormat.BC3RGBAUnorm;
 				break;
 
-			case RGBFormat:
 			case RGBAFormat:
 
 				switch ( type ) {