USB: pl2303: remove unreachable code

Signed-off-by: Michal Sroczynski <msroczyn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/pl2303.c

@@ -360,9 +360,6 @@ static void pl2303_set_termios(struct tty_struct *tty,
 				tmp >>= 2;
 				buf[1] <<= 1;
 			}
-			if (tmp > 256) {
-				tmp %= 256;
-			}
 			buf[0] = tmp;
 		}
 	}