[CIR][NFS] Remove unnecessary constraints asserts in VecCmpOp (llvm#142473)

We already have constraints in CIROps to make sure that the operands and
result type are vectors
[VecCmpOp](https://github.com/llvm/llvm-project/blob/b88dfb0b23d0a1863414fb9450ee444766bfe7c9/clang/include/clang/CIR/Dialect/IR/CIROps.td#L2149-L2151)

Author: AmrDeveloper

clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp

@@ -1858,10 +1858,6 @@ mlir::LogicalResult CIRToLLVMVecInsertOpLowering::matchAndRewrite(
 mlir::LogicalResult CIRToLLVMVecCmpOpLowering::matchAndRewrite(
     cir::VecCmpOp op, OpAdaptor adaptor,
     mlir::ConversionPatternRewriter &rewriter) const {
-  assert(mlir::isa<cir::VectorType>(op.getType()) &&
-         mlir::isa<cir::VectorType>(op.getLhs().getType()) &&
-         mlir::isa<cir::VectorType>(op.getRhs().getType()) &&
-         "Vector compare with non-vector type");
   mlir::Type elementType = elementTypeIfVector(op.getLhs().getType());
   mlir::Value bitResult;
   if (auto intType = mlir::dyn_cast<cir::IntType>(elementType)) {