refactor 657

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_657.java

@@ -1,26 +1,5 @@
 package com.fishercoder.solutions;
 
-/**
- * 657. Judge Route Circle
- *
- * Initially, there is a Robot at position (0, 0).
- * Given a sequence of its moves, judge if this robot makes a circle,
- * which means it moves back to the original place.
-
- The move sequence is represented by a string.
- And each move is represent by a character.
- The valid robot moves are R (Right), L (Left), U (Up) and D (down).
- The output should be true or false representing whether the robot makes a circle.
-
- Example 1:
- Input: "UD"
- Output: true
-
- Example 2:
- Input: "LL"
- Output: false
- */
-
 public class _657 {
     public static class Solution1 {
         public boolean judgeCircle(String moves) {