[X86] Remove unnecessary redeclaration of a variable with the same assignment as the beginning of the function. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225155 91177308-0d34-0410-b5e6-96231b3b80d8

Author: topperc

lib/Target/X86/MCTargetDesc/X86BaseInfo.h

@@ -697,7 +697,6 @@ namespace X86II {
     case X86II::MRM2m: case X86II::MRM3m:
     case X86II::MRM4m: case X86II::MRM5m:
     case X86II::MRM6m: case X86II::MRM7m: {
-      bool HasVEX_4V = TSFlags & X86II::VEX_4V;
       unsigned FirstMemOp = 0;
       if (HasVEX_4V)
         ++FirstMemOp;// Skip the register dest (which is encoded in VEX_VVVV).