Revert of X87: Reimplement Maps and Sets in JS (patchset #1 id:1 of https://codereview.chromium.org/1066373002/)

Reason for revert:
Reverting as it resulted in a closed waterfall.

Original issue's description:
> X87: Reimplement Maps and Sets in JS
>
> port 909500aa (r27605)
>
> original commit message:
>     Previously, the only optimized code path for Maps and Sets was for String keys.
>     This was achieved through an implementation of various complex operations
>     in Hydrogen. This approach was neither scalable nor forward-compatible.
>
>     This patch adds the necessary intrinsics to implement Maps and Sets almost entirely
>     in JS. The added intrinsics are:
>
>       %_FixedArrayGet
>       %_FixedArraySet
>       %_TheHole
>       %_JSCollectionGetTable
>       %_StringGetRawHashField
>
>     With these additions, as well as a few changes to what's exposed as runtime functions,
>     most of the C++ code backing Maps and Sets is gone (including both runtime code in
>     objects.cc and Crankshaft in hydrogen.cc).
>
> BUG=
>
> Committed: https://crrev.com/56600a35a49ffa5abcba66b14839089de3589ad9
> Cr-Commit-Position: refs/heads/master@{#27681}

TBR=weiliang.lin@intel.com,chunyang.dai@intel.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1073723002

Cr-Commit-Position: refs/heads/master@{#27682}