qcacld-3.0: Remove tgt_send_cp_big_data_stats_req() prototype

The tgt_send_cp_big_data_stats_req() prototype was added by:
  qcacld-3.0: Add support for big data stats
  Change-Id I3642035d9f25237c80b529da78c51bb1ccf0035a

However a function with that name is not actually present. Instead,
the struct wlan_lmac_if_cp_stats_tx_ops::send_req_big_data_stats()
function pointer is used to send the request.

Since the prototype is unused, remove it.

Change-Id: I1a05c40d2ae639e4b6333362661e9012786a467c
CRs-Fixed: 3430267

components/cp_stats/dispatcher/inc/wlan_cp_stats_mc_tgt_api.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2018, 2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2023 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
@@ -85,18 +85,6 @@ QDF_STATUS
 tgt_mc_cp_stats_process_big_data_stats_event(
 				struct wlan_objmgr_psoc *psoc,
 				struct big_data_stats_event *event);
-
-/**
- * tgt_send_cp_big_data_stats_req(): API to send big data stats request
- * to lmac
- * @psoc: pointer to psoc object
- * @req: pointer to request info
- *
- * Return: status of operation
- */
-QDF_STATUS tgt_send_cp_big_data_stats_req(struct wlan_objmgr_psoc *psoc,
-					  struct request_info *req);
-
 #endif
 
 /**