X86: remove X86COFFMachineModuleInfo

Remove dead code.  This is vestigial after r98384.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207927 91177308-0d34-0410-b5e6-96231b3b80d8
X86: further range-loopify AsmPrinter

Use more range loops in the X86AsmPrinter.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207928 91177308-0d34-0410-b5e6-96231b3b80d8