Hiding Delete this course button

[joe_fahs]

Instructure providing the attached JS code to hide the Delete this course and Conclude this course buttons from all users except Canvas Admins. It appears to work for all browsers except Safari (Javascript enabled). Instructure provides no support for the script, however. 

What is your experience in hiding these buttons?

Is there an idea specifically for removing a role permission for deleting or concluding courses without having to resort to coding?

Thank you!