[X86] Disable masked UNPCKLPD/UNPCKHPD -> SHUFPS transformation

UNPCKLPD/UNPCKHPD is a 64-bit element operation. The masked version
doesn't match SHUFPS in lanes.
This reverts part of D144763.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D147507