Revert "serial: sh-sci: Initialize spinlock for uart console"

This reverts commit f38278e.

There has been a quick fix against uninitialised lock revealed by
the commit f743061 ("serial: core: Initialise spin lock before use
in uart_configure_port()"). Since we have now better fix in serial core,
this may be safely reverted.

Fixes: f38278e ("serial: sh-sci: Initialize spinlock for uart console")
Depends-on: f743061 ("serial: core: Initialise spin lock before use in uart_configure_port()")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200711135346.71171-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/sh-sci.c

@@ -3301,9 +3301,6 @@ static int sci_probe_single(struct platform_device *dev,
 		sciport->port.flags |= UPF_HARD_FLOW;
 	}
 
-	if (sci_uart_driver.cons->index == sciport->port.line)
-		spin_lock_init(&sciport->port.lock);
-
 	ret = uart_add_one_port(&sci_uart_driver, &sciport->port);
 	if (ret) {
 		sci_cleanup_single(sciport);