* Update plugins/gitiles from branch 'master'
to 5c911f37e429e6a5006e2d0fae2aa146ce5cb7b1
- Bazel: Remove unused bazlets.bzl
In Ied12dd0f38 the build was adjusted for adding this plugin as a core
gerrit plugin, but bazlets.bzl was missed to be removed.
Change-Id: I896be7c9cf2a67e6900fe8347dca94703e30b990