Travis 14.04 support: The gstreamer-developers PPA is no longer required
Travis 14.04 support: The gstreamer-developers PPA is no longer required

The gstreamer-developers PPA was needed with Ubuntu 12.04 because it
doesn't have GStreamer >= 1.0 in its repos.  Ubuntu 14.04 does so we don't
need this any more.

martynjarvis/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester