Remove UI controller methods.

Change-Id: Ia1f3b158e993542b4a8aee58d343c0cf0c9e181f
Depends-On: Ie936046e8eb98a52a9dff498b4f471c6e19e5697
Reviewed-on: http://gerrit.dmdirc.com/3298
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager