vim: Remove duplicated keywords from cmake.vim

Auxiliary/vim/syntax/cmake.vim

@@ -483,7 +483,6 @@ syn keyword cmakeProperty contained
             \ XCODE_SCHEME_DYNAMIC_LIBRARY_LOADS
             \ XCODE_SCHEME_DYNAMIC_LINKER_API_USAGE
             \ XCODE_SCHEME_ENABLE_GPU_API_VALIDATION
-            \ XCODE_SCHEME_ENABLE_GPU_FRAME_CAPTURE_MODE
             \ XCODE_SCHEME_ENABLE_GPU_SHADER_VALIDATION
             \ XCODE_SCHEME_ENVIRONMENT
             \ XCODE_SCHEME_EXECUTABLE
@@ -1850,7 +1849,6 @@ syn keyword cmakeVariable contained
             \ CMAKE_XCODE_SCHEME_DYNAMIC_LIBRARY_LOADS
             \ CMAKE_XCODE_SCHEME_DYNAMIC_LINKER_API_USAGE
             \ CMAKE_XCODE_SCHEME_ENABLE_GPU_API_VALIDATION
-            \ CMAKE_XCODE_SCHEME_ENABLE_GPU_FRAME_CAPTURE_MODE
             \ CMAKE_XCODE_SCHEME_ENABLE_GPU_SHADER_VALIDATION
             \ CMAKE_XCODE_SCHEME_ENVIRONMENT
             \ CMAKE_XCODE_SCHEME_GUARD_MALLOC