Revert of MIPS: Use weak cells in map checks in polymorphic ICs. (patchset #1 id...

Revert of MIPS: Use weak cells in map checks in polymorphic ICs. (patchset #1 id:1 of https://codereview.chromium.org/767623003/)

Reason for revert:
Need to revert the ported CL:
https://codereview.chromium.org/771033003/

Original issue's description:
> MIPS: Use weak cells in map checks in polymorphic ICs.
>
> Port 45a36948e1bb0f02d395ecbcfe6306553898268b
>
> Fix typo in the mips ports.
>
> BUG=

TBR=ulan@chromium.org,danno@chromium.org,akos.palfi@imgtec.com,balazs.kilvady@imgtec.com,gergely.kis@imgtec.com,dusan.milosavljevic@imgtec.com,paul.lind@imgtec.com
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/768303002

Cr-Commit-Position: refs/heads/master@{#25596}