Remove useless string IDS_WEBRTC_LOGS_LOG_LOCAL_FILE_FORMAT.

Remove useless string IDS_WEBRTC_LOGS_LOG_LOCAL_FILE_FORMAT.

This string contains nothing but a placeholder; it doesn't need to
exist. Plus, it's not translated (even though it's not marked
translateable="false") so it messes with translation stats.

BUG=518020
Committed: https://crrev.com/6d361f6a0e471694bd2ab31a0793390aaf62e7c8
Cr-Commit-Position: refs/heads/master@{#348965}

[newt (away), 2015-09-15 01:33:19]

newt@chromium.org changed reviewers:
+ grunell@chromium.org

[newt (away), 2015-09-15 01:33:20]

PTAL

[Henrik Grunell, 2015-09-15 07:32:19]

lgtm

[Henrik Grunell, 2015-09-15 07:32:39]

On 2015/09/15 07:32:19, Henrik Grunell wrote:
> lgtm

Thanks for doing this!

[newt (away), 2015-09-15 16:38:43]

The CQ bit was checked by newt@chromium.org

[newt (away), 2015-09-15 16:38:55]

The CQ bit was unchecked by newt@chromium.org

[newt (away), 2015-09-15 16:50:09]

newt@chromium.org changed reviewers:
+ dbeam@chromium.org

[newt (away), 2015-09-15 16:50:10]

+dbeam as browser/resources and webui OWNER

[Dan Beam, 2015-09-15 17:50:59]

lgtm w00t

[newt (away), 2015-09-15 18:57:10]

The CQ bit was checked by newt@chromium.org

[commit-bot: I haz the power, 2015-09-15 18:57:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1342043002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1342043002/1

[commit-bot: I haz the power, 2015-09-15 19:51:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-15 19:51:41]

Patchset 1 (id:??) landed as
https://crrev.com/6d361f6a0e471694bd2ab31a0793390aaf62e7c8
Cr-Commit-Position: refs/heads/master@{#348965}

[commit-bot: I haz the power, 2015-09-23 12:48:24]

Patchset 1 (id:??) landed as
https://crrev.com/6d361f6a0e471694bd2ab31a0793390aaf62e7c8
Cr-Commit-Position: refs/heads/master@{#348965}