Remove unused import

* This isn't used yet, and it also breaks the build.

Change-Id: I2ba0bae133b8fcc89a745f286cde43dd320a2096
AsyncHttpServerResponse: Handle HEAD requests.
Add support for content type setting in MultiPart
Merge remote-tracking branch 'koush/master' into cm-11.0
Implement AsyncHttpServerResponse.sendStream
AsyncHttpServerResponse: Handle HEAD requests.
Add support for content type setting in MultiPart
Add functions for getting the logging.

Change-Id: Ia12708f66e5ea7efb7ed889d0e924653f8d2fa44
Merge remote-tracking branch 'koush/master' into cm-11.0
Fix some NPE in AsyncHttpServerResponseImple.
Merge branch 'koush-authority/master'