USB: speedtch.c fix sparse shadowed variable warning

i is used only as a for-loop index no need to declare another.
drivers/usb/atm/speedtch.c:832:7: warning: symbol 'i' shadows an earlier one
drivers/usb/atm/speedtch.c:766:6: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/atm/speedtch.c

@@ -829,7 +829,6 @@ static int speedtch_bind(struct usbatm_data *usbatm,
 	if (use_isoc) {
 		const struct usb_host_interface *desc = data_intf->cur_altsetting;
 		const __u8 target_address = USB_DIR_IN | usbatm->driver->isoc_in;
-		int i;
 
 		use_isoc = 0; /* fall back to bulk if endpoint not found */