serial: pch_uart: Remove unneeded NULL check

There is no need to do a NULL check for debugfs_remove().

Quoting Documentation/filesystems/debugfs.txt:

"The dentry value can be NULL, in which case nothing will be removed."

, so remove the unneeded NULL check.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/pch_uart.c

@@ -1862,8 +1862,7 @@ static void pch_uart_exit_port(struct eg20t_port *priv)
 {
 
 #ifdef CONFIG_DEBUG_FS
-	if (priv->debugfs)
-		debugfs_remove(priv->debugfs);
+	debugfs_remove(priv->debugfs);
 #endif
 	uart_remove_one_port(&pch_uart_driver, &priv->port);
 	free_page((unsigned long)priv->rxbuf.buf);