qcacmn: Remove DPU signatures from TDLS Add STA Response

The ucast_sig and bcast_sig fields in struct tdls_add_sta_rsp date
back to a previous version of the driver that used these signatures to
synchronize the data plane with the control plane. However the current
version of the driver does not use these parameters, so remove them as
the final stage of the plan to completely remove these signatures from
throughout the driver.

Since the converged struct tdls_add_sta_rsp must exactly match the
legacy tSirTdlsAddStaRsp data structure, this change is co-dependent
with the qcacld-3.0 change:
  qcacld-3.0: Remove DPU signatures from TDLS Add STA Response
  Change-Id: I765b090fc5dbe9bdaf83b05a72223c0a12f71a18

Change-Id: I7750fac9e4870d75358606bea427a5dbab97c665
CRs-Fixed: 2200973

umac/tdls/core/src/wlan_tdls_cmds_process.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2018 The Linux Foundation. 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
@@ -140,8 +140,6 @@ struct tdls_add_sta_req {
  * @session_id: session id
  * @sta_id: sta id
  * @sta_type: sta type
- * @ucast_sig: unicast signature
- * @bcast_sig: broadcast signature
  * @tdls_oper: add peer type
  * @psoc: soc object
  */
@@ -153,8 +151,6 @@ struct tdls_add_sta_rsp {
 	uint8_t session_id;
 	uint16_t sta_id;
 	uint16_t sta_type;
-	uint8_t ucast_sig;
-	uint8_t bcast_sig;
 	enum tdls_add_oper tdls_oper;
 	struct wlan_objmgr_psoc *psoc;
 };