Reason for revert:
Reverting due to causing Word64AndWithImmediateWithWord64Sh to fail locally (but not on the bot).
BUG=v8:5956
Original issue's description:
> [arm64] A shift of 0 is not allowed in ubfx.
>
> R=bmeurer@chromium.org, v8-arm-ports@googlegroups.com
> BUG=v8:5951
>
> Review-Url: https://codereview.chromium.org/2685943003
> Cr-Commit-Position: refs/heads/master@{#43090}
> Committed: c46ccef921TBR=bmeurer@chromium.org,v8-arm-ports@googlegroups.com,martyn.capewell@arm.com,ahaas@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5951
Review-Url: https://codereview.chromium.org/2687373002
Cr-Commit-Position: refs/heads/master@{#43105}