Remove legacy comments and parameter from usage class

Author: massimo93

src/graphs/usage/PrimUsageV2.java

@@ -11,11 +11,6 @@
 import java.nio.file.Paths;
 import java.text.DecimalFormat;
 
-/**
- * Main class set to run the second version of the Prim algorithm NB: it needs
- * to be executed passing the italian_dist_graph.csv file path as command line
- * argument.
- */
 public class PrimUsageV2 {
 
 	private static final Charset ENCODING = StandardCharsets.UTF_8;
@@ -35,7 +30,7 @@ public static void main(String[] args) throws Exception {
 		loadAllEntries(args[0], g);
 		System.out.println("Graph created");
 
-		Graph mst = Prim.mstPrim(g, "abbadia", new MinComparator());
+		Graph mst = Prim.mstPrim(g, "A", new MinComparator());
 		System.out.println("Vertex count: " + mst.vertexCount());
 		System.out.println("Edge count: " + mst.edgeCount());
 		DecimalFormat formatter = new DecimalFormat("#0.000");