[aur-general] Drop LLVM from [community]

Hello, The package 'llvm' is an orphaned [communuity] package. I'd like to request that it me moved to the AUR so I can maintain it (I have an update and overhaul ready) and I can also create a 'clang' package for it. (split package for llvm AND clang) Then it can be adopted by a TU if they want to bring it back into [community]. Thanks :)