Remove opensuseleap from shippable tests in 2.1.

These tests were not part of CI at the time 2.1 was released.

They are not currently passing in stable-2.1, as changes necessary
for them to pass were made after the release.

shippable.yml

@@ -20,7 +20,6 @@ matrix:
     - env: TEST=integration IMAGE=ansible/ansible:centos7
     - env: TEST=integration IMAGE=ansible/ansible:fedora-rawhide
     - env: TEST=integration IMAGE=ansible/ansible:fedora23
-    - env: TEST=integration IMAGE=ansible/ansible:opensuseleap
     - env: TEST=integration IMAGE=ansible/ansible:ubuntu1204 PRIVILEGED=true
     - env: TEST=integration IMAGE=ansible/ansible:ubuntu1404 PRIVILEGED=true
     - env: TEST=integration IMAGE=ansible/ansible:ubuntu1604