Deprecate static compliance violation report

Problem to solve

In GitLab 18.3 we released a new version of the compliance violation report, which uses custom compliance frameworks to configure which violations are triggered. This gives all of the same functionality as the current static violations report, but allows users to configure the violations that they require.

In GitLab 18.9 we'll remove the current static violations report.

Proposal

Create deprecation notice

Measure usage of the report and APIs to confirm usage below 0.1%

If below usages mark for ~2 milestones then:

• Remove DB tables
• Remove APIs
• Remove docs
• Remove frontend banner
• Remove dashboard report