Revert "[clang][AArch64] Add getHostCPUFeatures to query for enabled … (#114066)
…features in cpu info (#97749)"
This reverts commit d732c0b13c55259177f2936516b6087d634078e0.
This is breaking buildbots
https://lab.llvm.org/buildbot/#/builders/190/builds/8413,
https://lab.llvm.org/buildbot/#/builders/56/builds/10880 and a few
others.