Remove Python 2.5 from .travis.yml.
Remove Python 2.5 from .travis.yml.

Travis CI no longer supports Python 2.5.  Thanks to @dmorrison42
for pointing this out.  Removing 2.5 from the Travis config should
make the Travis build status image work again.

charbeljc/pystache,jrnold/pystache,jrnold/pystache,charbeljc/pystache,beni55/pystache,beni55/pystache,defunkt/pystache