testserver.py: Remove log spam that would print on most requests.

testserver.py: Remove log spam that would print on most requests.

The ShouldHandleRequest call in the handlers is just the
prefix matching, implementing a filter-chain pattern,
and failure is normal.

BUG=None
TBR=phajdan.jr@chromium.org

Committed: https://crrev.com/0b789ef8f4f2b7ff37137f650525c5c6044b7bf7
Cr-Commit-Position: refs/heads/master@{#302692}

[ncarter (slow), 2014-11-04 18:49:13]

nick@chromium.org changed reviewers:
+ nasko@chromium.org

[ncarter (slow), 2014-11-04 18:49:42]

Nasko, please review

[nasko, 2014-11-04 19:01:43]

D'oh, sorry about that. LGTM

[ncarter (slow), 2014-11-04 21:32:00]

nick@chromium.org changed reviewers:
+ phajdan.jr@chromium.org

[ncarter (slow), 2014-11-04 21:32:04]

The CQ bit was checked by nick@chromium.org

[commit-bot: I haz the power, 2014-11-04 21:33:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/700923003/1

[commit-bot: I haz the power, 2014-11-04 22:44:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-04 22:45:25]

Patchset 1 (id:??) landed as
https://crrev.com/0b789ef8f4f2b7ff37137f650525c5c6044b7bf7
Cr-Commit-Position: refs/heads/master@{#302692}