Remove CSS files we no longer use.

Review Request #5860 — Created May 22, 2014 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
e63ccb6...

Reviewers

We have some cruft in our css directory. In particular, docs.css and
iphone.css, neither of which have been used for a very, very long time.
This change just gets rid of them.

Searched the codebase for any reference to either. None found.