[X86][SSE] Remove BLENDPD canonicalization from combineTargetShuffle

When rL336971 removed the scalar-fp isel patterns, we lost the need for this canonicalization - commutation/folding can handle everything else.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337387 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed