Revert of GN: Enable proguard for apks

Revert of GN: Enable proguard for apks (patchset #2 id:20001 of https://codereview.chromium.org/1433873004/ )

Reason for revert:
Broke gn-release-builder-l
https://uberchromegw.corp.google.com/i/internal.client.clank/builders/gn-release-builder-l/builds/3091/steps/compile/logs/stdio

Original issue's description:
> GN: Enable proguard for apks
>
> This moves a little bit more about how to run proguard for test apks into
> proguard_utils.py and adds the gn rules/etc for running proguard on apks.
>
> BUG=554513
TBR=newt@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=554513
Committed: https://crrev.com/dcf9bc68fe1ad6131f7570e2b407fd1a228b34e5
Cr-Commit-Position: refs/heads/master@{#359206}

[agrieve, 2015-11-12 01:32:43]

Created Revert of GN: Enable proguard for apks

[commit-bot: I haz the power, 2015-11-12 01:36:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1436083002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1436083002/1

[commit-bot: I haz the power, 2015-11-12 01:39:48]

Committed patchset #1 (id:1)

[agrieve, 2015-11-12 02:00:44]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1435193002/ by agrieve@chromium.org.

The reason for reverting is: Reland with fix to write_build_config.py.

[commit-bot: I haz the power, 2015-11-12 20:02:41]

Patchset 1 (id:??) landed as
https://crrev.com/dcf9bc68fe1ad6131f7570e2b407fd1a228b34e5
Cr-Commit-Position: refs/heads/master@{#359206}