Remove Hotspot Start method.

Content.Server/Atmos/EntitySystems/AtmosphereSystem.Hotspot.cs

@@ -108,10 +108,11 @@ namespace Content.Server.Atmos.EntitySystems
                 {
                     Volume = exposedVolume * 25f,
                     Temperature = exposedTemperature,
-                    SkippedFirstProcess = tile.CurrentCycle > gridAtmosphere.UpdateCounter
+                    SkippedFirstProcess = tile.CurrentCycle > gridAtmosphere.UpdateCounter,
+                    Valid = true,
+                    State = 1
                 };
 
-                tile.Hotspot.Start();
 
                 AddActiveTile(gridAtmosphere, tile);
                 gridAtmosphere.HotspotTiles.Add(tile);

Content.Server/Atmos/Hotspot.cs

@@ -24,11 +24,5 @@ namespace Content.Server.Atmos
         /// </summary>
         [ViewVariables]
         public byte State;
-
-        public void Start()
-        {
-            Valid = true;
-            State = 1;
-        }
     }
 }

Content.Shared/Atmos/Atmospherics.cs

@@ -1,6 +1,7 @@
 using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 using System;
+// ReSharper disable InconsistentNaming
 
 namespace Content.Shared.Atmos
 {