Do not install indico-fonts on travis
Do not install indico-fonts on travis

They randomly fail ("Could not find a version that satisfies the
requirement ...") and are only needed for PDF stuff which is currently
not tested anyway.

OmeGak/indico,indico/indico,DirkHoffmann/indico,mic4ael/indico,mvidalgarcia/indico,pferreir/indico,OmeGak/indico,mic4ael/indico,mvidalgarcia/indico,mic4ael/indico,OmeGak/indico,mvidalgarcia/indico,DirkHoffmann/indico,mvidalgarcia/indico,ThiefMaster/indico,mic4ael/indico,indico/indico,OmeGak/indico,pferreir/indico,indico/indico,pferreir/indico,DirkHoffmann/indico,pferreir/indico,ThiefMaster/indico,ThiefMaster/indico,ThiefMaster/indico,DirkHoffmann/indico,indico/indico