gpu: fix the ancient comment which deceived me into making that mistake in the first place

desmume/src/GPU.cpp

@@ -767,10 +767,8 @@ void GPU_setVideoProp(GPU * gpu, u32 p)
 
 	if(cnt->OBJ_Tile_mapping)
 	{
-		// 1-d sprite mapping 
-		// boundary :
-		// core A : 32k, 64k, 128k, 256k
-		// core B : 32k, 64k, 128k, 128k
+		//1-d sprite mapping boundaries:
+		//32k, 64k, 128k, 256k
 		gpu->sprBoundary = 5 + cnt->OBJ_Tile_1D_Bound ;
 		
 		//do not be deceived: even though a sprBoundary==8 (256KB region) is impossible to fully address