deregister (God::Conditions::ProcessExits)

    # File lib/god/conditions/process_exits.rb, line 57
          def deregister
            pid = self.pid
            if pid
              EventHandler.deregister(pid, :proc_exit)

              msg = "#{self.watch.name} deregistered 'proc_exit' event for pid #{pid}"
              applog(self.watch, :info, msg)
            else
              pid_file_location = self.pid_file || self.watch.pid_file
              applog(self.watch, :error, "#{self.watch.name} could not deregister: no cached PID or PID file #{pid_file_location} (#{self.base_name})")
            end
          end