Remove an unreachable leak filter.

Remove an unreachable leak filter.

The current filter does not match the actual mangled name of the function, so it cannot be reachable. [1]

Since it doesn't seem to be needed anyway, deleting rather than updating it.

[1] At a minimum the function name would have changed in https://chromium.googlesource.com/chromium/src/+/15f5713c41825ea900cd6dc4f6de4a6d3fff538d

BUG=164178
Committed: https://crrev.com/7bf036b16f1c54558698cd203acd18022233c081
Cr-Commit-Position: refs/heads/master@{#327774}

[eroman, 2015-04-30 04:35:21]

eroman@chromium.org changed reviewers:
+ davidben@chromium.org

[davidben, 2015-04-30 19:58:29]

lgtm

[eroman, 2015-04-30 20:03:49]

The CQ bit was checked by eroman@chromium.org

[commit-bot: I haz the power, 2015-04-30 20:05:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120503003/1

[commit-bot: I haz the power, 2015-04-30 20:11:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-30 20:12:49]

Patchset 1 (id:??) landed as
https://crrev.com/7bf036b16f1c54558698cd203acd18022233c081
Cr-Commit-Position: refs/heads/master@{#327774}