Remove duplicates from .gitignore
Remove duplicates from .gitignore

This patch removes the duplicated releasenotes/build
lines from .gitignore.

Change-Id: Ia327920e3f2f2a5a8ecc03da31d06dfc1736d6aa

openstack/openstack-ansible-rsyslog_client,openstack/openstack-ansible-rsyslog_client