refactor 560

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_560.java

@@ -18,7 +18,6 @@
 public class _560 {
 
     public static class Solution1 {
-
         /**
          * credit: https://discuss.leetcode.com/topic/87850/java-solution-presum-hashmap
          * We know the key to solve this problem is SUM[i, j].