Revert "REQ-627 setup Travis for feature branch"

Revert Travis setup in preparation of merge to master.

This reverts commit d9e2c28.

Author: lindig

.travis.yml

@@ -9,5 +9,4 @@ env:
     - PINS="xapi-idl:."
     - DISTRO="debian-unstable"
     - OCAML_VERSION="4.07"
-    - BASE_REMOTE_BRANCH="REQ-627"
     - BASE_REMOTE="https://github.com/xapi-project/xs-opam.git"