Remove `security_report_schemas_rubygem` feature flag
What does this MR do and why?
Removes the security_report_schemas_rubygem
feature flag which was rolled out in #470692 (closed).
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Related to #470692 (closed)
Edited by Dominic Bauer