Remove some unused methods.
Remove some unused methods.

Change-Id: I0f8402f9988855a9a524aebb874cdaf05dffcc49
Reviewed-on: http://gerrit.dmdirc.com/3300
Reviewed-by: Chris Smith <711c73f64afdce07b7e38039a96d2224209e9a6c@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

csmith/DMDirc-Plugins,csmith/DMDirc-Plugins,DMDirc/Plugins,DMDirc/Plugins,csmith/DMDirc-Plugins,csmith/DMDirc-Plugins,DMDirc/Plugins,DMDirc/Plugins,DMDirc/Plugins,csmith/DMDirc-Plugins