Kill 2.6/2.7

.travis.yml

@@ -1,7 +1,5 @@
 language: python
 python:
-  - 2.6
-  - 2.7
   - 3.5
   - 3.6
 # Enable 3.7 without globally enabling sudo and dist: xenial for other build jobs
@@ -26,7 +24,6 @@ env:
   - ACCESS_TOKEN_B64=U2FsdGVkX18QdBhvMNshM4PGy04tU3HLwKP+nNSoNZHKsvGLjELcWEXN2LIu/T+yngX1vGONf9lo14ElnfS4k7sfhiru8phR4+rZuBVP3bDvC2A6fXJuhuLqNhBrWqg32WQewvxLWDWBoKmnvRHg5b74GHh+IN/12tU0cBF2HK8=
 install:
   - pip install -r requirements.txt
-  - if [[ $TRAVIS_PYTHON_VERSION == '2.6' ]]; then pip install unittest2; fi
 script: nosetests -v -w tests/ --logging-filter="twython" --with-cov --cov twython --cov-config .coveragerc --cov-report term-missing
 notifications:
   email: false

tests/config.py

@@ -2,10 +2,7 @@
 import os
 
 import sys
-if sys.version_info[0] == 2 and sys.version_info[1] == 6:
-    import unittest2 as unittest
-else:
-    import unittest
+import unittest
 
 app_key = os.environ.get('APP_KEY')
 app_secret = os.environ.get('APP_SECRET')