Revert of Convert ipc_mojo_unittests to run exclusively on Swarming

Revert of Convert ipc_mojo_unittests to run exclusively on Swarming (patchset #1 id:1 of https://codereview.chromium.org/1222243003/)

Reason for revert:
Results in data races on ThreadSanitizer MFYI bot: http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20TSan%20Tests/builds/6970

Original issue's description:
> Convert ipc_mojo_unittests to run exclusively on Swarming
>
> 0 configs already ran on Swarming
> 8 used to run locally and were converted:
> - chromium.linux.json: Android GN
> - chromium.linux.json: Linux Tests
> - chromium.linux.json: Linux Tests (dbg)(1)
> - chromium.linux.json: Linux Tests (dbg)(1)(32)
> - chromium.memory.fyi.json: Linux ChromeOS MSan Tests
> - chromium.memory.fyi.json: Linux MSan Tests
> - chromium.memory.fyi.json: Linux TSan Tests
> - chromium.win.json: XP Tests (1)
>
> Ran:
>   ./manage.py --convert ipc_mojo_unittests
>
> BUG=98637
>
> Committed: https://crrev.com/15593557f4f387d91dc7726511a20cb999c81561
> Cr-Commit-Position: refs/heads/master@{#337431}

TBR=viettrungluu@chromium.org,maruel@chromium.org,thakis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=98637
Committed: https://crrev.com/88f5fa1663ae01c1474f6efa733f222ae494e867
Cr-Commit-Position: refs/heads/master@{#337473}

[Derek Bruening, 2015-07-06 21:05:21]

Created Revert of Convert ipc_mojo_unittests to run exclusively on Swarming

[commit-bot: I haz the power, 2015-07-06 21:05:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1218743008/1

[commit-bot: I haz the power, 2015-07-06 21:08:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-06 21:09:20]

Patchset 1 (id:??) landed as
https://crrev.com/88f5fa1663ae01c1474f6efa733f222ae494e867
Cr-Commit-Position: refs/heads/master@{#337473}