Remove `License-Management.gitlab-ci.yml` completely

This is a follow-up from #213572 (closed)

In %13.0 we dropped support for License-Management CI template. We've updated it to show users an error message with how to update their config for License-Scanning. Now we need just to delete the file completely.

Testing

Regression tests on the Secure Test projects should capture Licence Scanning testing.

Timing

The work should occur in 13.11 but not apply until as close to 14.0 as possible - aka remove this as close to the end of 13.11 as possible please but not missing the cutoff

Release Post

this MUST be announced in 13.9-14.0 per policy

  • 13.9
  • 13.10
  • 13.11 MR
  • 13.12 MR
  • 14.0 MR

Changelog

  • This MUST be announced in 14.0 changelog

Blog post

Edited by Nicole Schwartz