Remove UI controller methods.

Depends-On: Ia1f3b158e993542b4a8aee58d343c0cf0c9e181f
Change-Id: Ie936046e8eb98a52a9dff498b4f471c6e19e5697
Reviewed-on: http://gerrit.dmdirc.com/3297
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager
Update submodules: plugins (new commits)

plugins:
    9b17eb0 Greg Holmes <greg@dmdirc.com>
            Remove UI controller methods.

            Depends-On: Ie936046e8eb98a52a9dff498b4f471c6e19e5697
            Gerrit: http://gerrit.dmdirc.com/3298

Change-Id: Ibfc4d3c318f2544c2735776aec40c389782e8b28