Fixes #3738 - Remove reference of 'Policy Templates' (PT, policy template, Policy Template) in rudder-upgrade script
Refs #3738 - Remove code for migration of Technique 'Set the permissions of files' from Rudder 2.3 to 2.4~beta3
Merge pull request #79 from nperron/ust_3711/int/3738_remove_remaining_pt_ref

Fixes #3738 - Remove reference of 'Policy Templates' (PT, policy template, Policy Template) in rudder-upgrade script