[MLIR][Conversion] Vector to LLVM: Remove unneeded vector shuffle#162946

silee2 merged 4 commits intollvm:mainllvm/llvm-project:mainfrom

silee2:vectorBroadcastSingleElem1DVectorFromScalarsilee2/llvm-project:vectorBroadcastSingleElem1DVectorFromScalarCopy head branch name to clipboard