qcacmn: Remove util_scan_scm_chan_to_band API

Remove util_scan_scm_chan_to_band API is this wont work for
6G band.

Change-Id: I52fe841653aa9c139f97772adfced1f4e280ab2f
CRs-Fixed: 2990486

umac/scan/dispatcher/inc/wlan_scan_utils_api.h

@@ -1738,14 +1738,6 @@ util_scan_entry_rsnxe(struct scan_cache_entry *scan_entry)
 	return scan_entry->ie_list.rsnxe;
 }
 
-/**
- * util_scan_scm_chan_to_band() - function to tell band for channel number
- * @chan: Channel number
- *
- * Return: Band information as per channel
- */
-enum wlan_band util_scan_scm_chan_to_band(uint32_t chan);
-
 /**
  * util_scan_scm_freq_to_band() - API to get band from frequency
  * @freq: Channel frequency

umac/scan/dispatcher/src/wlan_scan_utils_api.c

@@ -113,14 +113,6 @@ util_get_last_scan_time(struct wlan_objmgr_vdev *vdev)
 		return 0;
 }
 
-enum wlan_band util_scan_scm_chan_to_band(uint32_t chan)
-{
-	if (WLAN_CHAN_IS_2GHZ(chan))
-		return WLAN_BAND_2_4_GHZ;
-
-	return WLAN_BAND_5_GHZ;
-}
-
 enum wlan_band util_scan_scm_freq_to_band(uint16_t freq)
 {
 	if (WLAN_REG_IS_24GHZ_CH_FREQ(freq))