Update submodules: util (new commits)

util:
    7ba58d1 Chris Smith <chris@dmdirc.com>
            Tidying.

            Remove pointless super() calls.
            Remove redundant interface decs.
            Remove unnecessary enum annotations.
            Change .length == 0 to .isEmpty.

            Gerrit: http://gerrit.dmdirc.com/3843

Change-Id: I9ea96a4310c198404c0285efd32042faeb04d695
Update submodules: plugins (new commits)

plugins:
    a1b0127 Chris Smith <chris@dmdirc.com>
            Tidying.

            Remove pointless super() calls.
            Remove redundant interface decs.
            Remove unnecessary enum annotations.
            Change .length == 0 to .isEmpty.

            Gerrit: http://gerrit.dmdirc.com/3842

Change-Id: I3cac394357327abccfbe61f3fb63dead82ad7d71
Tidying.

Remove pointless super() calls.
Remove redundant interface decs.
Remove unnecessary enum annotations.
Change .length == 0 to .isEmpty.

Change-Id: Idf6909061c246072af786d9292dc2f5ecd0ed337
Reviewed-on: http://gerrit.dmdirc.com/3841
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>