fix(测试计划): 关注后再次点击测试计划，会自动取消关注

--bug=1012246 --user=李玉号 【测试计划】关注后再次点击测试计划，会自动取消关注
https://www.tapd.cn/55049933/s/1137407

backend/src/main/java/io/metersphere/track/service/TestPlanService.java

@@ -244,8 +244,6 @@ public class TestPlanService {
                 }
             }
         }
-        List<String> follows = request.getFollows();
-        editTestFollows(request.getId(), follows);
         return this.editTestPlan(request);
     }