MOD: remove joinGroup in Register

mooctest-site-server/src/main/java/cn/iselab/mooctest/site/web/logic/impl/UserLogicImpl.java

@@ -1,6 +1,5 @@
 package cn.iselab.mooctest.site.web.logic.impl;
 
-import cn.iselab.mooctest.site.models.MobileVerification;
 import cn.iselab.mooctest.site.models.Role;
 import cn.iselab.mooctest.site.models.User;
 import cn.iselab.mooctest.site.service.*;
@@ -85,9 +84,6 @@ public class UserLogicImpl extends BaseLogic implements UserLogic {
         //add user2role(worker default)
         user2RoleService.setDefaultRole(user.getId());
 
-        //add worker into group 0
-        groupService.joinGroup(user.getId(), groupService.getGroup(0));
-
         return userVOWrapper.wrap(user);
     }