[Release] Stop prepending "r" to commit hashes

[Release] Stop prepending "r" to commit hashes

Follow-up of https://codereview.chromium.org/1298973007/

Fix syntax

R=adamk@chromium.org, machenbach@chromium.org

Committed: https://crrev.com/224d74ed6f4e14a7f3e4b105ef1c1d5de5b8db53
Cr-Commit-Position: refs/heads/master@{#30521}

[Michael Hablich, 2015-09-01 11:26:49]

hablich@chromium.org changed reviewers:
+ adamk@chromium.org, machenbach@chromium.org

[Michael Hablich, 2015-09-01 11:26:57]

PTAL

[Michael Achenbach, 2015-09-01 14:54:58]

lgtm

[Michael Hablich, 2015-09-01 17:32:34]

The CQ bit was checked by hablich@chromium.org

[commit-bot: I haz the power, 2015-09-01 17:32:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1324813003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1324813003/1

[commit-bot: I haz the power, 2015-09-01 18:31:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-01 18:31:59]

Patchset 1 (id:??) landed as
https://crrev.com/224d74ed6f4e14a7f3e4b105ef1c1d5de5b8db53
Cr-Commit-Position: refs/heads/master@{#30521}