qcacld-3.0: Remove hdd_stop_bus_bw_computer_timer()

wlan_hdd_main.h defines the hdd_stop_bus_bw_computer_timer() stub
function. This function is not used, so remove it.

Change-Id: I81c9da51d8c3e4ef8650667a91b0040675c7c390
CRs-Fixed: 2106845

core/hdd/inc/wlan_hdd_main.h

@@ -2067,10 +2067,6 @@ static inline void hdd_bus_bw_compute_timer_try_stop(struct hdd_context *hdd_ctx
 {
 }
 
-static inline void hdd_stop_bus_bw_computer_timer(struct hdd_adapter *pAdapter)
-{
-}
-
 static inline int hdd_bus_bandwidth_init(struct hdd_context *hdd_ctx)
 {
 	return 0;