LLVM minor cleanup (#17905)
LLVM minor cleanup (#17905)

* Since LLVM already depends on the CUDA build system, these lines are redundant.

* This conflict doesn't do anything.
iulian787/spack,iulian787/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack,LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack