Clean up manual install of phantomjs2, now that we just invoke phantomjs-prebuilt within tox.
Clean up manual install of phantomjs2, now that we just invoke phantomjs-prebuilt within tox.

learningequality/kolibri,jayoshih/kolibri,benjaoming/kolibri,learningequality/kolibri,christianmemije/kolibri,DXCanas/kolibri,rtibbles/kolibri,rtibbles/kolibri,indirectlylit/kolibri,jayoshih/kolibri,aronasorman/kolibri,christianmemije/kolibri,mrpau/kolibri,learningequality/kolibri,jonboiser/kolibri,DXCanas/kolibri,DXCanas/kolibri,mrpau/kolibri,jonboiser/kolibri,mrpau/kolibri,MingDai/kolibri,aronasorman/kolibri,DXCanas/kolibri,jayoshih/kolibri,aronasorman/kolibri,lyw07/kolibri,jonboiser/kolibri,mrpau/kolibri,lyw07/kolibri,jonboiser/kolibri,aronasorman/kolibri,MingDai/kolibri,learningequality/kolibri,benjaoming/kolibri,lyw07/kolibri,lyw07/kolibri,christianmemije/kolibri,rtibbles/kolibri,MingDai/kolibri,jayoshih/kolibri,christianmemije/kolibri,MingDai/kolibri,indirectlylit/kolibri,benjaoming/kolibri,indirectlylit/kolibri,indirectlylit/kolibri,rtibbles/kolibri,benjaoming/kolibri