remove travis

.travis.yml

@@ -1,14 +0,0 @@
-language: python
-services:
-  - redis-server
-python:
-  - "3.5"
-  - "3.6"
-install:
-  - "pip install -r requirements.txt"
-  - "pip install pytest-cov"
-  - "pip install coveralls"
-script:
-  - py.test --cov-config .coveragerc --cov=opencombat ./tests/
-after_success:
-  - coveralls