Remove feature flags older than Heptapod 17.3
These are ready for final rollout:
hgitaly_detect_generated_files
hgitaly_pull
rhgitaly_list_last_commits_for_tree
All legacy (hg-git based) Projects have been automatically migrated to native with the upgrade of 2025-01-23
These are ready for final rollout:
hgitaly_detect_generated_files
hgitaly_pull
rhgitaly_list_last_commits_for_tree