Remove EE-specific code from `POST /api/v4/projects/:id/members`
We currently have ab EE-specific chunk of code in the POST /api/v4/projects/:id/members
endpoint:
## EE specific
if source_type == 'project' && source.group && source.group.membership_lock
not_allowed!
end
## EE specific
There is already a similar check in ProjectTeam#add_users
that prevents adding members to a project when membership is locked at the group level.
Btw, the check is not present in ProjectTeam#add_user
!
Since the 405 (Not Allowed) response is not currently documented, I'd say we could just drop the EE-specific code above and call it a day.