Delete .travis.yml

.travis.yml

-language: python
-
-python:
-  - "2.7"
-
-sudo: required
-
-os:
-  - linux
-
-script:
-  - /bin/bash ./run_test.sh
-  - flake8 `find . -name "*.py"`
-
-notifications:
-  email:
-    on_success: change
-    on_failure: always