Remove expiration and renewal rules for obsolete courses

Summary: Some course assignments that were set up years ago with renewal option. Those course assignments now needs to be mass updated for no renewals or as never expires.

Content (required):

We have some courses and offerings assignments setup 3 years back with renewal option set every year. Some of those courses are no longer in use. However, since renewal was set at the time of first assignment an automatic assignment is getting created now which is no longer required. The only option found so far is to manually edit each assignment and correct renewals. Looking for a way to mass correct assignments for a specific course with no renewals. Many thanks.