remove extra mask

Author: Aidan

llvm/unittests/CodeGen/SelectionDAGPatternMatchTest.cpp

@@ -126,7 +126,6 @@ TEST_F(SelectionDAGPatternMatchTest, matchVecShuffle) {
   const std::array<int, 4> MaskData = {2, 0, 3, 1};
   const std::array<int, 4> OtherMaskData = {1, 2, 3, 4};
   ArrayRef<int> Mask;
-  ArrayRef<int> OtherMask;
 
   SDValue V0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, VInt32VT);
   SDValue V1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, VInt32VT);