Tests/RunCMake/TIClang: Remove unused link flags from test cases Typos in commit 9ba0a54554 (TIClang: Add support for TI Clang-based compilers, including tiarmclang, 2023-12-06, v3.29.0-rc1~4^2~1) left the flags unused. In particular, `CMAKE_<LANG>_LINKER_FLAGS` does not exist.