qca-wifi: Remove unused peer mgmt stats

Peer delete request and response stats has been moved to per vap
stats.

Change-Id: I9f46ead931d4b9f13166db9510394993575516d9
CRs-Fixed: 2455845

dp/inc/cdp_txrx_extd_struct.h

@@ -140,8 +140,6 @@ struct ol_ath_radiostats {
 	uint64_t    wmi_tx_mgmt;
 	uint64_t    wmi_tx_mgmt_completions;
 	uint32_t    wmi_tx_mgmt_completion_err;
-	uint32_t    peer_delete_req;
-	uint32_t    peer_delete_resp;
 	uint32_t    rx_mgmt_rssi_drop;
 	uint32_t    tx_frame_count;
 	uint32_t    rx_frame_count;