Remove update:application_controller rake task.
Merge pull request #11420 from simi/remove_update_application_controller_task

Remove update:application_controller rake task.
Remove block argument from callback example.

[ci skip]
Merge pull request #11413 from envylabs/master

Remove block argument from callback example. [ci skip]
Removed unused file! Moved to actionview

Removed unused file as this has been
moved to actionview
Merge pull request #11421 from arunagw/actionpack_activerecord_remove

Removed unused file! Moved to actionview