games/jinput: unbreak

This port is broken because of an examples package - which is not needed 
for distribution.

I don't know how to unbreak this examples classes, but they are not 
needed, and the package can be built after removing this line from the 
pom.xml file (line 61):

<module>examples</module>

I tested it locally, and it worked.

Can someone provide a fix for this build? Thanks in advance.