qcacld-3.0: Remove wma_sta_send_vdev_down_bss() prototype

Change Iee7274fbc8ae985d034a29f920faa38aab68ccc7 ("qcacld-3.0: Add
VDEV state machine for STA disconnection") removed the implementation
of function wma_sta_send_vdev_down_bss(). However it left behind the
prototype, so remove it now.

Change-Id: Ia43371f6c86632955f67370d3ffc9b2753f797f7
CRs-Fixed: 2379064

core/wma/inc/wma_internal.h

@@ -1592,14 +1592,4 @@ int wma_roam_scan_stats_event_handler(void *handle, uint8_t *event,
  */
 void wma_send_vdev_down(tp_wma_handle wma, struct wma_target_req *req);
 
-/**
- * wma_sta_send_vdev_down_bss() - send vdev down to firmware
- * @wma: wma handle.
- * @req: vdev request
- *
- * This function sends vdev down to firmware
- *
- * Return: none
- */
-void wma_sta_send_vdev_down_bss(tp_wma_handle wma, struct wma_target_req *req);
 #endif