strip: remove experimental.prunestrip option
@marmoute decided to drop it because it's "neither documented nor a good idea".
This instance was upgraded to Heptapod 17.7.0rc1 on 2025-01-23
All legacy (hg-git based) Projects will be automatically migrated to native starting with the upgrade of 2025-01-23
@marmoute decided to drop it because it's "neither documented nor a good idea".