Remove depricated Java 7 from Travis checks
Remove depricated Java 7 from Travis checks

jrbeaumont/workcraft,danilovesky/workcraft,tuura/workcraft,tuura/workcraft,jrbeaumont/workcraft,workcraft/workcraft,danilovesky/workcraft,jrbeaumont/workcraft,tuura/workcraft,danilovesky/workcraft,workcraft/workcraft,workcraft/workcraft,danilovesky/workcraft,workcraft/workcraft