remove release notes jobs from vmware-nsx
remove release notes jobs from vmware-nsx

This patch removes the release notes job from the vmware-nsx pipeline.
The vmware-nsx release notes have some syntax errors; it appears they
were never built in v2 jobs. Therefore we can add this job back in
when/if they are fixed up in vmware-nsx.

Change-Id: I7d95a88f0cd94ae11ab15497278c737423203e45

openstack-infra/project-config,openstack-infra/project-config