Remove Travis Hooks
Travis default setup doesn't provide a c++11 compiler or a new enough CMake.
- https://open.cdash.org/viewConfigure.php?buildid=4480063
- https://open.cdash.org/viewBuildError.php?buildid=4480060
So remove all travis related code.
Travis default setup doesn't provide a c++11 compiler or a new enough CMake.
So remove all travis related code.