staging: r8188eu: remove build_deauth_p2p_ie()

Function build_deauth_p2p_ie() is not used, remove it.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210922200420.9693-17-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_p2p.c

@@ -733,13 +733,6 @@ u32 build_assoc_resp_p2p_ie(struct wifidirect_info *pwdinfo, u8 *pbuf, u8 status
 	return len;
 }
 
-u32 build_deauth_p2p_ie(struct wifidirect_info *pwdinfo, u8 *pbuf)
-{
-	u32 len = 0;
-
-	return len;
-}
-
 u32 process_probe_req_p2p_ie(struct wifidirect_info *pwdinfo, u8 *pframe, uint len)
 {
 	u8 *p;

drivers/staging/r8188eu/include/rtw_p2p.h

@@ -13,7 +13,6 @@ u32 build_prov_disc_request_p2p_ie(struct wifidirect_info *pwdinfo,
 				   u8 *pdev_raddr);
 u32 build_assoc_resp_p2p_ie(struct wifidirect_info *pwdinfo,
 			    u8 *pbuf, u8 status_code);
-u32 build_deauth_p2p_ie(struct wifidirect_info *pwdinfo, u8 *pbuf);
 u32 process_probe_req_p2p_ie(struct wifidirect_info *pwdinfo,
 			     u8 *pframe, uint len);
 u32 process_assoc_req_p2p_ie(struct wifidirect_info *pwdinfo,