travis: remove java6 test
travis: remove java6 test

bodqhrohro/lorsource,fat0troll/lorsource,maxcom/lorsource,hizel/lorsource,bodqhrohro/lorsource,maxcom/lorsource,maxcom/lorsource,kloun/lorsource,kloun/lorsource,kloun/lorsource,hizel/lorsource,maxcom/lorsource,bodqhrohro/lorsource,fat0troll/lorsource,fat0troll/lorsource,ymn/lorsource,hizel/lorsource,kloun/lorsource,hizel/lorsource,ymn/lorsource,ymn/lorsource,fat0troll/lorsource,ymn/lorsource