feat：删除无效代码

haoban-manage3-api/src/main/java/com/gic/haoban/manage/api/util/RolesListUtils.java

-package com.gic.haoban.manage.api.util;
-
-import com.google.common.collect.Sets;
-
-import java.util.List;
-import java.util.stream.Collectors;
-
-/**
- * @author mozhu
- * @date 2022/5/11 15:19
- */
-public class RolesListUtils {
-
-    /**
-     * 合并list
-     *
-     * @param list1
-     * @param list2
-     * @return
-     */
-    public static List<String> mergeList(List<String> list1, String list2) {
-        //取交集
-        Sets.SetView<String> intersection = Sets.intersection(Sets.newHashSet(list1), Sets.newHashSet(list2));
-        return intersection.stream().collect(Collectors.toList());
-    }
-
-}