Remove SUN JDK6 from travis build.
Remove SUN JDK6 from travis build.

Don't care tbh :) JDK6 is EOL and the world needs to porgress forward.

Signed-off-by: Gary Pamparà <46654e9f53f0e5c1be5f3914582d375e0aa2156c@gmail.com>

cirg-up/cilib