qcacmn: Remove the wlan_reg_get_chan_enum instances

As chan num may be same for different bands, getting chan enum
from channel number can provide incorrect results.
Use wlan_reg_get_chan_enum_for_freq API to get chan enum instead
of the wlan_reg_get_chan_enum.

Change-Id: Ibf08bba31e3778cb4857612d2c95813558be5bc9
CRs-Fixed: 2885860

umac/regulatory/dispatcher/inc/wlan_reg_services_api.h

@@ -535,14 +535,6 @@ bool wlan_reg_is_etsi13_srd_chan_allowed_master_mode(struct wlan_objmgr_pdev
 bool wlan_reg_is_world(uint8_t *country);
 
 #ifdef CONFIG_CHAN_NUM_API
-/**
- * wlan_reg_get_chan_enum() - Get channel enum for given channel number
- * @chan_num: Channel number
- *
- * Return: Channel enum
- */
-enum channel_enum wlan_reg_get_chan_enum(uint8_t chan_num);
-
 /**
  * wlan_reg_get_5g_bonded_channel_state() - Get 5G bonded channel state
  * @pdev: The physical dev to program country code or regdomain

umac/regulatory/dispatcher/src/wlan_reg_services_api.c

@@ -886,17 +886,6 @@ enum band_info wlan_reg_chan_to_band(uint8_t chan_num)
 }
 
 qdf_export_symbol(wlan_reg_chan_to_band);
-
-/**
- * wlan_reg_get_chan_enum() - Get channel enum for given channel number
- * @chan_num: Channel number
- *
- * Return: Channel enum
- */
-enum channel_enum wlan_reg_get_chan_enum(uint8_t chan_num)
-{
-	return reg_get_chan_enum(chan_num);
-}
 #endif /* CONFIG_CHAN_NUM_API */
 
 bool wlan_reg_is_regdmn_en302502_applicable(struct wlan_objmgr_pdev *pdev)