[X86] Remove GetCpuIDAndInfo, GetCpuIDAndInfoEx and DetectFamilyModel functions from X86 MC layer. They haven't been used since CPU autodetection was removed from X86Subtarget.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233170 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed