staging: r8188eu: remove rtw_set_channel_plan()

Function rtw_set_channel_plan() is not used, remove it.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210922200420.9693-25-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_ioctl_set.c

@@ -505,16 +505,3 @@ u16 rtw_get_cur_max_rate(struct adapter *adapter)
 
 	return max_rate;
 }
-
-/*
-* rtw_set_channel_plan -
-* @adapter: pointer to struct adapter structure
-* @channel_plan:
-*
-* Return _SUCCESS or _FAIL
-*/
-int rtw_set_channel_plan(struct adapter *adapter, u8 channel_plan)
-{
-	/* handle by cmd_thread to sync with scan operation */
-	return rtw_set_chplan_cmd(adapter, channel_plan, 1);
-}

drivers/staging/r8188eu/include/rtw_ioctl_set.h

@@ -20,7 +20,6 @@ u8 rtw_set_802_11_infrastructure_mode(struct adapter *adapter,
 				      enum ndis_802_11_network_infra type);
 u8 rtw_set_802_11_ssid(struct adapter *adapt, struct ndis_802_11_ssid *ssid);
 u16 rtw_get_cur_max_rate(struct adapter *adapter);
-int rtw_set_channel_plan(struct adapter *adapter, u8 channel_plan);
 int rtw_change_ifname(struct adapter *padapter, const char *ifname);
 
 #endif