string: fix remaining print

Author: AlexisEnglebert

src/main/java/strings/Bombe.java

@@ -128,7 +128,6 @@ public static int[] solve(int n, int m, char [][] grid) {
         if (mini.first == 10_000_000_00 && mini.second == 10_000_000_00) {
             return new int[]{-1, -1};
         } else {
-            System.out.println(mini.first + " " + mini.second);
             return new int[]{mini.first, mini.second};
         }
         // END STRIP

src/test/java/graphs/ElectricityTest.java

@@ -78,5 +78,4 @@ public void complexityTest1() {
         assertEquals(answer, Electricity.minimumSpanningCost(n,edges));
     }
 
-
 }