qcacld-3.0: Remove unnecessary includes from ol_if_athvar.h

The header file ol_if_athvar.h is strange in that it is a qcacld-3.0
file that is included by files in the qca-wifi-host-cmn project.  That
model does not conform to the software architecture so there is a plan
to correctly refactor the file. As a preliminary step remove all
include directives that are not actually required by the files that
include this header file.

Change-Id: Ifbb38adba434aa19fade4838e30d39884b6e4615
CRs-Fixed: 2366965

core/bmi/inc/ol_if_athvar.h

@@ -22,13 +22,7 @@
 #ifndef _DEV_OL_ATH_ATHVAR_H
 #define _DEV_OL_ATH_ATHVAR_H
 
-#include <osapi_linux.h>
-#include "qdf_types.h"
-#include "qdf_lock.h"
-#include "wmi_unified_api.h"
 #include "htc_api.h"
 #include "bmi_msg.h"
-#include "ol_params.h"
-#include <wdi_event_api.h>
 
 #endif /* _DEV_OL_ATH_ATHVAR_H  */