video_core/cmake: Remove Werror flags already defined code-base wide

These flags are already defined in src/cmake.

src/video_core/CMakeLists.txt

@@ -312,9 +312,7 @@ else()
         -Werror=pessimizing-move
         -Werror=redundant-move
         -Werror=shadow
-        -Werror=switch
         -Werror=type-limits
-        -Werror=unused-variable
 
         $<$<CXX_COMPILER_ID:GNU>:-Werror=class-memaccess>
         $<$<CXX_COMPILER_ID:GNU>:-Werror=unused-but-set-parameter>