serial: pch_uart: remove reference to .set_wake()

This callback is gone and not coming back, so will not be
supported later.

Cc: Johan Hovold <jhovold@gmail.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/pch_uart.c

@@ -1614,7 +1614,6 @@ static struct uart_ops pch_uart_ops = {
 	.shutdown = pch_uart_shutdown,
 	.set_termios = pch_uart_set_termios,
 /*	.pm		= pch_uart_pm,		Not supported yet */
-/*	.set_wake	= pch_uart_set_wake,	Not supported yet */
 	.type = pch_uart_type,
 	.release_port = pch_uart_release_port,
 	.request_port = pch_uart_request_port,