removed print statement (#228)

Author: czgdp1807

pydatastructs/graphs/adjacency_matrix.py

@@ -51,7 +51,6 @@ def remove_vertex(self, node):
 
     def add_edge(self, source, target, cost=None):
         source, target = str(source), str(target)
-        print(source, target)
         self.matrix[source][target] = True
         if cost is not None:
             self.edge_weights[source + "_" + target] = \