Clean up Gerrit project settings
Clean up Gerrit project settings

Follow up to [1]. Changes:
- remove imports for @Singleton and @Inject annotations
- use {filecomment} variable in new class template (AOSP header is not
repeated)

[1] https://gerrit-review.googlesource.com/#/c/104338/

Change-Id: Ic773719097caf53cf57db33c652e04617533fd65
Signed-off-by: Jacek Centkowski <ce4a73803a80af51ece4477dad59cc7b1801c73e@collab.net>

WANdisco/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,WANdisco/gerrit,gerrit-review/gerrit,gerrit-review/gerrit,gerrit-review/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,gerrit-review/gerrit,gerrit-review/gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,gerrit-review/gerrit,gerrit-review/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit