Remove feature flag adherence_report_ui and compliance_adherence_report

config/feature_flags/development/adherence_report_ui.yml

...feature_flags/development/compliance_adherence_report.yml

doc/user/compliance/compliance_center/index.md

...ripts/compliance_dashboard/compliance_dashboard_bundle.js

...vascripts/compliance_dashboard/components/reports_app.vue

ee/app/assets/javascripts/compliance_dashboard/router.js

ee/app/services/approval_rules/update_service.rb

ee/app/services/ee/projects/create_service.rb

...ervices/merge_request_approval_settings/update_service.rb

...iews/groups/security/compliance_dashboards/show.html.haml

...ec/features/groups/security/compliance_dashboards_spec.rb

...ntend/compliance_dashboard/components/reports_app_spec.js

ee/spec/services/approval_rules/update_service_spec.rb

...es/merge_request_approval_settings/update_service_spec.rb

ee/spec/services/projects/create_service_spec.rb

...ups/security/compliance_dashboards/show.html.haml_spec.rb