staging: dgnc: remove redundant initialization for channel array

The channel array in board_t was initialized in dgnc_found_board()
with NULL. But the channel is going to initialize in dgnc_tty_init().
So the channel array doesn't need to set NULL for initailization.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.c

@@ -400,9 +400,6 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
 
 	brd->state		= BOARD_FOUND;
 
-	for (i = 0; i < MAXPORTS; i++)
-		brd->channels[i] = NULL;
-
 	/* store which card & revision we have */
 	pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
 	pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);