Add journalctl support for log_messages

Author: JSroka7

server/lib/classes/monitor_tools.inc.php

@@ -664,7 +664,6 @@ public function _getLogData($log) {
 
 	private function _getOutputFromExecCommand ($command) {
 		$log = '';
-		echo $command;
 		$fd = popen($command, 'r');
 		if ($fd) {
 			$n = 0;