Issue #2080365 by mrsinguyen: Remove Unused local variable from...

Issue #2080365 by mrsinguyen: Remove Unused local variable  from /core/modules/system/lib/Drupal/system/Tests/FileTransfer/TestFileTransfer.php.

core/modules/system/lib/Drupal/system/Tests/FileTransfer/TestFileTransfer.php

@@ -33,8 +33,6 @@ static function factory($jail, $settings) {
   }
 
   function connect() {
-    $parts = explode(':', $this->hostname);
-    $port = (count($parts) == 2) ? $parts[1] : $this->port;
     $this->connection = new MockTestConnection();
     $this->connection->connectionString = 'test://' . urlencode($this->username) . ':' . urlencode($this->password) . "@$this->host:$this->port/";
   }