Remove depreacted validatorchain calls

Change-Id: I8ba2d0075c6131b18ec48c094d9f1b8d34910432
Reviewed-on: http://gerrit.dmdirc.com/3193
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager
Update submodules: plugins (new commits)

plugins:
    6368650 Greg Holmes <greg@dmdirc.com>
            Remove deprecations from the OSD plugin.

            Gerrit: http://gerrit.dmdirc.com/3191

Change-Id: Ifc593d407273ed5fd6b689b24d7239d090293712