qcacld-3.0: Remove unused enum pkt_origin

enum pkt_origin is unused, and is poorly defined so it should not be
used in the future, so remove it.

Change-Id: Ia51ffa4518b36ea50f9ed67007978e228b18c7fc
CRs-Fixed: 3424371

components/mlme/dispatcher/inc/wlan_mlme_public_struct.h

@@ -2783,11 +2783,6 @@ struct wlan_mlme_cfg {
 	struct wlan_mlme_eml_cap eml_cap;
 };
 
-enum pkt_origin {
-	FW,
-	HOST
-};
-
 /**
  * struct mlme_pmk_info - SAE Roaming using single pmk info
  * @pmk: pmk