qcacld-3.0: extscan: Logs cleanup

This is a qcacld-2.0 to qcacld-3.0 propagation.

Remove unnecessary logs and merge some of the logs together.

Change-Id: Ibf9fdf0a92cc71644f02d6890574eeed0d175d6f
CRs-Fixed: 1023849
diff --git a/core/hdd/src/wlan_hdd_cfg80211.c b/core/hdd/src/wlan_hdd_cfg80211.c
index 8e18bcd..01c4eca 100644
--- a/core/hdd/src/wlan_hdd_cfg80211.c
+++ b/core/hdd/src/wlan_hdd_cfg80211.c
@@ -1800,7 +1800,7 @@
 	uint32_t fset = 0;
 	int ret;
 
-	ENTER_DEV(wdev->netdev);
+	/* ENTER_DEV() intentionally not used in a frequently invoked API */
 
 	if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam()) {
 		hdd_err("Command not allowed in FTM mode");
@@ -1888,7 +1888,6 @@
 		goto nla_put_failure;
 	}
 	ret = cfg80211_vendor_cmd_reply(skb);
-	EXIT();
 	return ret;
 nla_put_failure:
 	kfree_skb(skb);