Revert of MIPS: Fix 'Assembler support for internal references.'

Revert of MIPS: Fix 'Assembler support for internal references.' (patchset #1 id:1 of https://codereview.chromium.org/922043005/)

Reason for revert:
Breaks http://build.chromium.org/p/chromium.fyi/builders/Android%20MIPS%20Builder%20(dbg)

Original issue's description:
> MIPS: Fix 'Assembler support for internal references.'
>
> Added new INTERNAL_REFERENCE_ENCODED RelocInfo type to differentiate MIPS existing use of internal references in instructions from the new raw pointer reference needed for dd(Label*).
>
> BUG=
> TEST=cctest/test-assembler-mips/jump_tables1, cctest/test-assembler-mips/jump_tables2, cctest/test-assembler-mips/jump_tables3, cctest/test-run-machops/RunSwitch1
>
> Committed: https://crrev.com/244ac6de8316259bc5878480e05348a369c08e2f
> Cr-Commit-Position: refs/heads/master@{#26651}

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

Committed: https://crrev.com/4fdac75d9f666ad15329dea3570b17911514eb41
Cr-Commit-Position: refs/heads/master@{#26675}

[Michael Achenbach, 2015-02-16 18:48:43]

Created Revert of MIPS: Fix 'Assembler support for internal references.'

[commit-bot: I haz the power, 2015-02-16 18:49:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/934623003/1

[commit-bot: I haz the power, 2015-02-16 18:49:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-16 18:49:58]

Patchset 1 (id:??) landed as
https://crrev.com/4fdac75d9f666ad15329dea3570b17911514eb41
Cr-Commit-Position: refs/heads/master@{#26675}