Update submodules: util (new commits)

util:
    cc70fb7 Greg Holmes <greg@dmdirc.com>
            Add unit test for StreamReaderUtil

            Gerrit: http://gerrit.dmdirc.com/4064

Change-Id: If88c3351251c2fa334dc275f0357cd63f72455f1
Update submodules: util (new commits)

util:
    60e9f7d Greg Holmes <greg@dmdirc.com>
            Remove deprecated methods.

            Gerrit: http://gerrit.dmdirc.com/4055

Change-Id: I8cd3a97080cdd51f6cfe3176ef1f1097a10e1f84