Fix Adapter\Pdo\Mysql::closeConnection on non-default ports

Removing the now redundant code.

Author: JacobBrownAustin

lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php

@@ -567,14 +567,6 @@ protected function _query($sql, $bind = [])
                     $triesCount++;
                     $this->closeConnection();
 
-                    /**
-                     * _connect() function does not allow port parameter, so put the port back with the host
-                     */
-                    if (!empty($this->_config['port'])) {
-                        $this->_config['host'] = implode(':', [$this->_config['host'], $this->_config['port']]);
-                        unset($this->_config['port']);
-                    }
-
                     $this->_connect();
                 }