To stop monitoring a rule name
Examples: (unmonitor '(:rewrite assoc-of-app)) :unmonitor (:rewrite assoc-of-app) :unmonitor :all General Forms: (unmonitor rune) (unmonitor :all)
Here,
Subtle point: Because you may want to unmonitor a ``rune'' that is
no longer a rune in the current ACL2 world, we don't actually
check this about