Fix duplicate#

plugins/examples/delayed-auth/mosquitto_delayed_auth.c

@@ -180,13 +180,3 @@ int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *opts, int op
 
 	return MOSQ_ERR_SUCCESS;
 }
-
-/* mosquitto_plugin_cleanup() is optional in 2.1 and later. Use it only if you have your own cleanup to do */
-int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *opts, int opt_count)
-{
-	UNUSED(user_data);
-	UNUSED(opts);
-	UNUSED(opt_count);
-
-	return MOSQ_ERR_SUCCESS;
-}

plugins/examples/topic-modification/mosquitto_topic_modification.c

@@ -79,15 +79,6 @@ int mosquitto_plugin_init(mosquitto_plugin_id_t *identifier, void **user_data, s
 	return mosquitto_callback_register(mosq_pid, MOSQ_EVT_MESSAGE, callback_message, NULL, NULL);
 }
 
-int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *opts, int opt_count)
-{
-	UNUSED(user_data);
-	UNUSED(opts);
-	UNUSED(opt_count);
-
-	return MOSQ_ERR_SUCCESS;
-}
-
 /* mosquitto_plugin_cleanup() is optional in 2.1 and later. Use it only if you have your own cleanup to do */
 int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *opts, int opt_count)
 {