USB: ftdi_sio: remove pointless syslog spew

Remove some pointless messages from the FTDI serial driver;
I found these filling up syslog on one system.  Also remove
a pointless "break" after a "return" in the same area.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/ftdi_sio.c

@@ -2292,11 +2292,8 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
 			   FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
 			   0, 0,
 			   buf, 1, WDR_TIMEOUT);
-		if (ret < 0) {
-			dbg("%s Could not get modem status of device - err: %d", __func__,
-			    ret);
+		if (ret < 0)
 			return ret;
-		}
 		break;
 	case FT8U232AM:
 	case FT232BM:
@@ -2311,15 +2308,11 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
 				   FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
 				   0, priv->interface,
 				   buf, 2, WDR_TIMEOUT);
-		if (ret < 0) {
-			dbg("%s Could not get modem status of device - err: %d", __func__,
-			    ret);
+		if (ret < 0)
 			return ret;
-		}
 		break;
 	default:
 		return -EFAULT;
-		break;
 	}
 
 	return  (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |