qcacld-3.0: Remove wma_handle_btm_denylist_event() prototype

Previously the function wma_handle_btm_blacklist_event() was removed
by:
  qcacld-3.0: Cleanup ROAM_TARGET_IF_CONVERGENCE usage
  Change-Id I6973d9c366ec6a9c6164dd19f6f4775dd3ebf5f0

However, the prototype was left behind.

This prototype was renamed as part of:
  qcacld-3.0: Replace blacklist/whitelist for denylist/allowlist
  Change-Id I9ba61dde3b3ea008ca3777448d1f8dab83d33ec1

But this is still a prototype without a function, so remove it.

Change-Id: I7b9ad27e7f9fd3195bbae77c07104a0ee4764e0b
CRs-Fixed: 3434500

core/wma/inc/wma_internal.h

@@ -335,9 +335,6 @@ int wma_passpoint_match_event_handler(void *handle,
 
 #endif
 
-int wma_handle_btm_denylist_event(void *handle, uint8_t *cmd_param_info,
-				  uint32_t len);
-
 #ifdef FEATURE_WLAN_EXTSCAN
 int wma_extscan_wow_event_callback(void *handle, void *event, uint32_t len);