remove unused var after refactoring

Author: mingmingl-llvm

llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp

@@ -2853,7 +2853,6 @@ void AsmPrinter::emitConstantPool() {
 // Print assembly representations of the jump tables used by the current
 // function.
 void AsmPrinter::emitJumpTableInfo() {
-  const DataLayout &DL = MF->getDataLayout();
   const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
   if (!MJTI) return;
   if (MJTI->getEntryKind() == MachineJumpTableInfo::EK_Inline) return;