Revert of Convert ppapi_unittests to run exclusively on Swarming (patchset #1 id...

Revert of Convert ppapi_unittests to run exclusively on Swarming (patchset #1 id:1 of https://codereview.chromium.org/1224453003/)

Reason for revert:
Results in multiple data races reported on ppapi_unittests by ThreadSanitizer

Original issue's description:
> Convert ppapi_unittests to run exclusively on Swarming
>
> 0 configs already ran on Swarming
> 46 used to run locally and were converted:
> - chromium.chromiumos.json: Linux ChromiumOS Ozone Tests (1)
> - chromium.chromiumos.json: Linux ChromiumOS Tests (1)
> - chromium.chromiumos.json: Linux ChromiumOS Tests (dbg)(1)
> - chromium.fyi.json: ClangToTLinux tester
> - chromium.fyi.json: ClangToTLinuxASan tester
> - chromium.fyi.json: ClangToTMac tester
> - chromium.fyi.json: ClangToTMacASan tester
> - chromium.fyi.json: ClangToTWin tester
> - chromium.fyi.json: ClangToTWin(dbg) tester
> - chromium.fyi.json: ClangToTWin(dll) tester
> - chromium.fyi.json: ClangToTWin64 tester
> - chromium.fyi.json: ClangToTWin64(dbg) tester
> - chromium.fyi.json: ClangToTWin64(dll) tester
> - chromium.fyi.json: CrWinAsan tester
> - chromium.fyi.json: CrWinAsan(dll) tester
> - chromium.fyi.json: CrWinClang tester
> - chromium.fyi.json: CrWinClang(dbg) tester
> - chromium.fyi.json: CrWinClang(shared) tester
> - chromium.fyi.json: CrWinClang64 tester
> - chromium.fyi.json: CrWinClang64(dbg) tester
> - chromium.fyi.json: CrWinClang64(dll) tester
> - chromium.fyi.json: CrWinClangLLD tester
> - chromium.fyi.json: Linux Trusty
> - chromium.fyi.json: Linux Trusty (dbg)
> - chromium.linux.json: Cast Linux
> - chromium.linux.json: Linux Tests
> - chromium.linux.json: Linux Tests (dbg)(1)
> - chromium.linux.json: Linux Tests (dbg)(1)(32)
> - chromium.mac.json: Mac10.10 Tests
> - chromium.mac.json: Mac10.6 Tests
> - chromium.mac.json: Mac10.8 Tests
> - chromium.mac.json: Mac10.9 Tests
> - chromium.mac.json: Mac10.9 Tests (dbg)
> - chromium.memory.fyi.json: Linux ChromeOS MSan Tests
> - chromium.memory.fyi.json: Linux MSan Tests
> - chromium.memory.fyi.json: Linux TSan Tests
> - chromium.memory.json: Linux ASan LSan Tests (1)
> - chromium.memory.json: Linux Chromium OS ASan LSan Tests (1)
> - chromium.memory.json: Mac ASan 64 Tests (1)
> - chromium.webkit.json: Linux ChromiumOS Tests (1)
> - chromium.webkit.json: Linux ChromiumOS Tests (dbg)(1)
> - chromium.win.json: Vista Tests (1)
> - chromium.win.json: Win 7 Tests x64 (1)
> - chromium.win.json: Win7 Tests (1)
> - chromium.win.json: Win7 Tests (dbg)(1)
> - chromium.win.json: XP Tests (1)
>
> Ran:
>   ./manage.py --convert ppapi_unittests
>
> BUG=98637
>
> Committed: https://crrev.com/0e660cb50e66dc9d5e794d63b4bd72079acefc2e
> Cr-Commit-Position: refs/heads/master@{#337272}

TBR=raymes@chromium.org,maruel@chromium.org,thakis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=98637

Review URL: https://codereview.chromium.org/1218743005

Cr-Commit-Position: refs/heads/master@{#337347}