Remove the ABI from the target features. It's obsoleted by

the -target-abi use and those features don't exist anymore.

llvm-svn: 229526

clang/lib/Basic/Targets.cpp

@@ -1161,9 +1161,6 @@ void PPCTargetInfo::getDefaultFeatures(llvm::StringMap<bool> &Features) const {
     .Default(false);
 
   Features["qpx"] = (CPU == "a2q");
-
-  if (!ABI.empty())
-    Features[ABI] = true;
 }
 
 bool PPCTargetInfo::hasFeature(StringRef Feature) const {