reworked toString method (to match other classes)

src/main/java/it/unibz/inf/isochrone/network/Location.java

@@ -49,11 +49,7 @@ public class Location {
 
 	@Override
 	public String toString() {
-		return "linkId: " + linkId + ", offset: " + offset;
-	}
-
-	public String toStringNotation() {
-		return linkId + "#" + offset;
+		return "Location [linkId: " + linkId + ", offset: " + offset + "]";
 	}
 
 }