staging: rtl8723bs: Remove unused function rtw_ch2freq

Remove unused function rtw_ch2freq with array ch_freq_map and comments.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/53a8ee320803ae3efe22b648f2a4555482efaf46.1725826273.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_cmd.c

@@ -1883,9 +1883,6 @@ void rtw_createbss_cmd_callback(struct adapter *padapter, struct cmd_obj *pcmd)
 		/*  copy pdev_network information to	pmlmepriv->cur_network */
 		memcpy(&tgt_network->network, pnetwork, (get_wlan_bssid_ex_sz(pnetwork)));
 
-		/*  reset ds_config */
-		/* tgt_network->network.configuration.ds_config = (u32)rtw_ch2freq(pnetwork->configuration.ds_config); */
-
 		_clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
 
 		spin_unlock_bh(&pmlmepriv->scanned_queue.lock);

drivers/staging/rtl8723bs/core/rtw_rf.c

@@ -7,28 +7,3 @@
 
 #include <drv_types.h>
 #include <linux/kernel.h>
-
-static const u32 ch_freq_map[] = {
-	2412,
-	2417,
-	2422,
-	2427,
-	2432,
-	2437,
-	2442,
-	2447,
-	2452,
-	2457,
-	2462,
-	2467,
-	2472,
-	2484
-};
-
-u32 rtw_ch2freq(u32 channel)
-{
-	if (channel == 0 || channel > ARRAY_SIZE(ch_freq_map))
-		return 2412;
-
-	return ch_freq_map[channel - 1];
-}

drivers/staging/rtl8723bs/include/rtw_rf.h

@@ -97,6 +97,4 @@ enum {
 	HT_DATA_SC_20_LOWER_OF_40MHZ = 2,
 };
 
-u32 rtw_ch2freq(u32 ch);
-
 #endif /* _RTL8711_RF_H_ */