staging: rtl8188eu: Remove unused function rtw_set_802_11_add_key()

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/rtw_ioctl_set.h

@@ -25,7 +25,6 @@
 
 typedef u8 NDIS_802_11_PMKID_VALUE[16];
 
-u8 rtw_set_802_11_add_key(struct adapter *adapt, struct ndis_802_11_key *key);
 u8 rtw_set_802_11_authentication_mode(struct adapter *adapt,
 				      enum ndis_802_11_auth_mode authmode);
 u8 rtw_set_802_11_bssid(struct adapter *adapter, u8 *bssid);