[android] Remove legacy architecture configs from perf runner.

[android] Remove legacy architecture configs from perf runner.

The android_* configs were never real v8 target
architectures, only make targets. This doesn't make sense
with ninja anymore.

BUG=chromium:502176
LOG=n
NOTRY=true

Committed: https://crrev.com/b2348f42c010f727164e45b3044cc2555841afdd
Cr-Commit-Position: refs/heads/master@{#29349}

[Michael Achenbach, 2015-06-29 14:21:22]

machenbach@chromium.org changed reviewers:
+ tandrii@chromium.org, ulan@chromium.org

[Michael Achenbach, 2015-06-29 14:23:50]

PTAL

[tandrii(chromium), 2015-06-29 15:02:11]

lgtm

[ulan, 2015-06-29 15:02:59]

lgtm

[Michael Achenbach, 2015-06-29 15:05:43]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2015-06-29 15:05:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1220743002/1

[commit-bot: I haz the power, 2015-06-29 15:07:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-29 15:07:42]

Patchset 1 (id:??) landed as
https://crrev.com/b2348f42c010f727164e45b3044cc2555841afdd
Cr-Commit-Position: refs/heads/master@{#29349}