staging: rtl8188eu: Remove unused function declaration

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/usb_osintf.h

@@ -29,9 +29,6 @@ extern int rtw_mc2u_disable;
 
 #define USBD_HALTED(Status) ((u32)(Status) >> 30 == 3)
 
-u8 usbvendorrequest(struct dvobj_priv *pdvobjpriv, enum bt_usb_request brequest,
-		    enum rt_usb_wvalue wvalue, u8 windex, void *data,
-		    u8 datalen, u8 isdirectionin);
 int pm_netdev_open(struct net_device *pnetdev, u8 bnormal);
 void netdev_br_init(struct net_device *netdev);
 void dhcp_flag_bcast(struct adapter *priv, struct sk_buff *skb);