Revert of Use SuppressFBWarnings to suppress findbugs warnings

Revert of Use SuppressFBWarnings to suppress findbugs warnings (patchset #12 id:290001 of https://codereview.chromium.org/793203002/)

Reason for revert:
This is consistently causing bot failures, starting with https://build.chromium.org/p/chromium.linux/builders/Android%20Builder%20%28dbg%29/builds/72002

Original issue's description:
> Use SuppressFBWarnings to suppress findbugs warnings
>
> This has several benefits:
> Makes the warning obvious at the place of the problem
> Makes suppressing the warnings the same as suppressing compiler and lint warnings
> Makes supporting findbugs as part of the build easier
>
> TBR=rmcilroy, mef, boliu
>
> BUG=431826
>
> Committed: https://crrev.com/e0237aaa82e64439e6186f7723d4b8ceff308b9d
> Cr-Commit-Position: refs/heads/master@{#311402}

TBR=aurimas@chromium.org,newt@chromium.org,tedchoc@chromium.org,mef@chromium.org,rmcilroy@chromium.org,boliu@chromium.org,cjhopman@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=431826
Committed: https://crrev.com/14aa2e5d9d1cbf6970ece6535fa1513873ca1057
Cr-Commit-Position: refs/heads/master@{#311417}

[Ken Rockot(use gerrit already), 2015-01-14 06:00:06]

Created Revert of Use SuppressFBWarnings to suppress findbugs warnings

[commit-bot: I haz the power, 2015-01-14 06:01:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/797403005/1

[commit-bot: I haz the power, 2015-01-14 06:02:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-14 06:02:46]

Patchset 1 (id:??) landed as
https://crrev.com/14aa2e5d9d1cbf6970ece6535fa1513873ca1057
Cr-Commit-Position: refs/heads/master@{#311417}