Revert of [arm64][turbofan]: Handle any immediate shift.

Revert of [arm64][turbofan]: Handle any immediate shift. (patchset #1 id:1 of https://codereview.chromium.org/1179733004/)

Reason for revert:
Breaks InstructionSelectorTest.Word64ShrWithWord64AndWithImmediate on debug builds (but not optdebug builds). I'll investigate.

Original issue's description:
> [arm64][turbofan]: Handle any immediate shift.
>
> With this patch, we can generate simple immediate-shift instructions for
> immediates outside the range "0 <= imm < width". Several related
> instruction selectors have also been updated accordingly.
>
> Example of generated code:
>
>     ---- Before ---         ---- After ----
>     movz w0, #33            lsr w0, w1, #1
>     lsr  w0, w1, w0
>
> BUG=
>
> Committed: https://crrev.com/36d771bbfa4af5efcc1c1dcf5b234445cb7ee722
> Cr-Commit-Position: refs/heads/master@{#28943}

TBR=bmeurer@chromium.org,ulan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/14755c0a2d8342c50523a65707a5ab79fd778df5
Cr-Commit-Position: refs/heads/master@{#28944}

[jbramley, 2015-06-11 14:46:15]

Created Revert of [arm64][turbofan]: Handle any immediate shift.

[commit-bot: I haz the power, 2015-06-11 14:46:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1176393002/1

[commit-bot: I haz the power, 2015-06-11 14:46:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-11 14:46:54]

Patchset 1 (id:??) landed as
https://crrev.com/14755c0a2d8342c50523a65707a5ab79fd778df5
Cr-Commit-Position: refs/heads/master@{#28944}