qcacmn: Removal of pre lithium wlan driver support in 12.x Software

Code related to IPQ4019 is removed

Change-Id: I64ef452cafe64840576f40a8f35bc617b9978c96

hif/inc/hostdef.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2013-2016,2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -40,9 +40,6 @@ extern struct hostdef_s *QCA6490_HOSTdef;
 extern struct hostdef_s *QCA6750_HOSTdef;
 extern struct hostdef_s *KIWI_HOSTdef;
 
-#ifdef ATH_AHB
-extern struct hostdef_s *IPQ4019_HOSTdef;
-#endif
 extern struct hostdef_s *QCA8074_HOSTdef;
 extern struct hostdef_s *QCA8074V2_HOSTDEF;
 extern struct hostdef_s *QCA6018_HOSTDEF;