Remove the time_t parameter from Tick and TickTimers.

Most uses of Tick do not use the parameter and even when it is used
it is always the same as CurTime.

include/modules/dns.h

@@ -173,7 +173,7 @@ namespace DNS
 		/** Used to time out the query, xalls OnError and lets the TimerManager
 		 * delete this request.
 		 */
-		void Tick(time_t) override
+		void Tick() override
 		{
 			Log(LOG_DEBUG_2) << "Resolver: timeout for query " << this->name;
 			Query rr(*this);