qcacld-3.0: Remove hdd_max_sta_vdev_count_reached() prototype

The function hdd_max_sta_vdev_count_reached() was removed by:
  qcacld-3.0: Check for max allowed STA vdevs in hdd_start_adapter()
  Change-Id I5b2dd09fb58aa3135743a029889e689729bd05a7

However, the prototype was not removed, so remove it now.

Change-Id: I3ca75963bb69f0d2fc5a27687566e70b11f02058
CRs-Fixed: 3428740

core/hdd/inc/wlan_hdd_main.h

@@ -4651,14 +4651,6 @@ void hdd_driver_unload(void);
  */
 void hdd_init_start_completion(void);
 
-/**
- * hdd_max_sta_vdev_count_reached() - check sta vdev count
- * @hdd_ctx: global hdd context
- *
- * Return: true if vdev limit reached
- */
-bool hdd_max_sta_vdev_count_reached(struct hdd_context *hdd_ctx);
-
 #if defined(CLD_PM_QOS) && defined(WLAN_FEATURE_LL_MODE)
 /**
  * hdd_beacon_latency_event_cb() - Callback function to get latency level