Python 2.6 not supported anymore on Travis.

Author: jonathanslenders

.travis.yml

@@ -11,7 +11,6 @@ matrix:
  - python: 3.5
  - python: 3.4
  - python: 2.7
- - python: 2.6
  - python: nightly
  - python: pypy
  - python: pypy3