Obsolete Logger cleanup for EntitySystems (#25941)

* Small obsolete Logger cleanup

* Fixed three EntitySystem logs that weren't doing it right.

Content.Server/Station/Systems/StationSystem.cs

@@ -456,7 +456,7 @@ public sealed class StationSystem : EntitySystem
 
         if (xform.GridUid == EntityUid.Invalid)
         {
-            Log.Debug("A");
+            Log.Debug("Unable to get owning station - GridUid invalid.");
             return null;
         }