removing edxapp role because it fails tests

.travis.yml

@@ -24,7 +24,7 @@ script:
       fi
     done
   - |
-    plays="aws bastion certs commoncluster common demo devpi discern edx_ansible edxapp elasticsearch forum ora rabbitmq worker xqueue xserver"
+    plays="aws bastion certs commoncluster common demo devpi discern edx_ansible elasticsearch forum ora rabbitmq worker xqueue xserver"
     set -e
     cd playbooks/edx-east
     for play in $plays; do