Remove travis CI from repo.

We don't use travis CI anymore.

Change-Id: I84c0fb516ebfca2c4de57417fa891e95d90b77b3

.travis.yml

@@ -1,9 +0,0 @@
-language: python
-python:
-  - "2.7"
-# command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors
-install: pip install --use-mirrors -r requirements.txt -r test-requirements.txt
-# # command to run tests, e.g. python setup.py test
-script:  python setup.py testr
-notifications:
-  irc: "irc.freenode.org#tripleo"