code: def remove_signup(self, user=None, force=False, dont_run_waitlist=False):
          
  
          exception = eighth_exceptions.SignupException()
  
          if user is not None:
              if user != self.user and not user.is_eighth_admin:
                  exception.SignupForbidden = True
  
          # Check if the block has been locked
          if self.scheduled_activity.block.locked:
              exception.BlockLocked = True
  
          # Check if the scheduled activity has been cancelled
          if self.scheduled_activity.cancelled:
              exception.ScheduledActivityCancelled = True
  
          # Check if the activity has been deleted
          if self.scheduled_activity.activity.deleted:
              exception.ActivityDeleted = True
  
          # Check if the user is already stickied into an activity
          if self.scheduled_activity.activity and self.scheduled_activity.activity.sticky:
              exception.Sticky = True
  
          if len(exception.messages()) > 0 and not force:
              raise exception
          else:
              block = self.scheduled_activity.block
              self.delete()
              if settings.ENABLE_WAITLIST and self.scheduled_activity.waitlist.all().exists() and not block.locked and not dont_run_waitlist:
                  if not self.scheduled_activity.is_full():
                      waitlists = EighthWaitlist.objects.get_next_waitlist(self.scheduled_activity)
                      self.scheduled_activity.notify_waitlist(waitlists, self.scheduled_activity)
              return "Successfully removed signup for {}.".format(block)
docs: Attempt to remove the EighthSignup if the user has permission to do so.