Cleanup of unnecessary code

OSMDatastructure/Graph/OsmNode.cs

@@ -12,15 +12,15 @@ public class OsmNode
     public OsmNode(ulong nodeId, float lat, float lon)
     {
         this.nodeId = nodeId;
-        this.edges = new();
-        this.coordinates = new Coordinates(lat, lon);
+        edges = new();
+        coordinates = new Coordinates(lat, lon);
     }
 
     [JsonConstructor]
     public OsmNode(ulong nodeId, Coordinates coordinates)
     {
         this.nodeId = nodeId;
-        this.edges = new();
+        edges = new();
         this.coordinates = coordinates;
     }
     
@@ -29,7 +29,8 @@ public class OsmNode
         HashSet<OsmEdge> e = edges.Where(edge => edge.neighborId == n.nodeId).ToHashSet();
         if (e.Count > 0)
             return e.First();
-        else return null;
+        
+        return null;
     }
 
     public override bool Equals(object? obj)