ci: remove travis
ci: remove travis

since now we have the ceph CI taking care of the syntax check we don't
need travis anymore. Thanks Travis you served us well!

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>
(cherry picked from commit 9fbe65cb72e01c586af3a27788c8e3e9549e0abf)

albertomurillo/ceph-ansible,travmi/ceph-ansible,guits/ceph-ansible,travmi/ceph-ansible,font/ceph-ansible,WingkaiHo/ceph-ansible,font/ceph-ansible,albertomurillo/ceph-ansible,bengland2/ceph-ansible,guits/ceph-ansible,jtaleric/ceph-ansible,jtaleric/ceph-ansible,ceph/ceph-ansible,fgal/ceph-ansible,WingkaiHo/ceph-ansible,fgal/ceph-ansible,ceph/ceph-ansible,albertomurillo/ceph-ansible,WingkaiHo/ceph-ansible,bengland2/ceph-ansible