Temporarily remove flake8 tests (aimacode#487)

Author: Chipe1

.travis.yml

@@ -16,7 +16,6 @@ install:
 script:
   - py.test
   - python -m doctest -v *.py
-  - flake8 .
 
 after_success:
   - flake8 --max-line-length 100 --ignore=E121,E123,E126,E221,E222,E225,E226,E242,E701,E702,E704,E731,W503 .