In `get_media_item()`, `$tags` and `$_tags` are set and never used.

See #27882.


git-svn-id: https://develop.svn.wordpress.org/trunk@28297 602fd350-edb4-49c9-b593-d223f7449a82
In `attachment_submit_meta_box()`, remove dead code:

* `$action` doesn't need to be imported.
* `$can_publish` is set and never used, which means it doesn't need...
* `$post_type_object` or `$post_type`, which only served `$can_publish`.

See #27882.


git-svn-id: https://develop.svn.wordpress.org/trunk@28298 602fd350-edb4-49c9-b593-d223f7449a82
In `update_option_new_admin_email()`, `$email` is set and never used.

See #27882.



git-svn-id: https://develop.svn.wordpress.org/trunk@28299 602fd350-edb4-49c9-b593-d223f7449a82