[LoopVectorize][NFC] Remove unused variable in addUsersInExitBlocks (llvm#124553)

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

Author: david-arm

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -9072,7 +9072,6 @@ 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.