removed debug output

Author: s3inlc

src/dba/AbstractModelFactory.class.php

@@ -938,7 +938,6 @@ public function getDB(bool $test = false): ?PDO {
       return self::$dbh;
     }
     catch (PDOException $e) {
-      echo $e->getMessage()."\n";
       if ($test) {
         return null;
       }