[LoopVectorize][NFC] Remove unused variable in addUsersInExitBlocks

We were allocating a VPTypeAnalysis object on the stack, but never
using it for anything.

Author: david-arm

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -9073,7 +9073,6 @@ addUsersInExitBlocks(VPlan &Plan,
 
   auto *MiddleVPBB = Plan.getMiddleBlock();
   VPBuilder B(MiddleVPBB, MiddleVPBB->getFirstNonPhi());
-  VPTypeAnalysis TypeInfo(Plan.getCanonicalIV()->getScalarType());
 
   // Introduce extract for exiting values and update the VPIRInstructions
   // modeling the corresponding LCSSA phis.