Do not require LLVM_CONFIG with clean (#3092)
Do not require LLVM_CONFIG with clean (#3092)


cquinn/ponyc,dipinhora/ponyc,sgebbie/ponyc,ponylang/ponyc,sgebbie/ponyc,sgebbie/ponyc,kulibali/ponyc,jemc/ponyc,dipinhora/ponyc,cquinn/ponyc,kulibali/ponyc,sgebbie/ponyc,ponylang/ponyc,sgebbie/ponyc,jemc/ponyc,kulibali/ponyc,cquinn/ponyc,ponylang/ponyc,cquinn/ponyc,kulibali/ponyc,dipinhora/ponyc,jemc/ponyc