[Starlingx-discuss] [Doc] restapi-doc wadl based package removal

[Arce Moreno, Abraham]

We have already transitioned our StarlingX API documentation [0] based on
OpenStack API documentation guidelines [1].

It is time to remove the previous restapi-doc package based on wadl format using maven
to generate it. We would appreciate your support to review these changes and point out any
missing dependency, the change set is found here [2]

[0] https://wiki.openstack.org/wiki/StarlingX/Developer_Guide/API_Documentation#Tracking
[1] https://docs.openstack.org/doc-contrib-guide/api-guides.html
[2] https://review.openstack.org/#/q/topic:restapi-doc-wadl+(status:open+OR+status:merged)