Agent: Remove errant exploitation event from hadoop

If no potential URLs are found, then no exploit is attempted, so there's
no reason to publish an ExploitationEvent.

monkey/infection_monkey/exploit/hadoop.py

@@ -57,7 +57,6 @@ class HadoopExploiter(WebRCE):
             self.exploit_result.error_message = (
                 f"No potential exploitable urls has been found for {self.host}"
             )
-            self._publish_exploitation_event(False, error_message=self.exploit_result.error_message)
             return self.exploit_result
 
         monkey_path_on_victim = get_agent_dst_path(self.host)