fix

src/admin/problemset/list.vue

@@ -75,11 +75,6 @@ const columns: DataTableColumn<ProblemSetList>[] = [
       return h(NTag, { type: config.type }, { default: () => config.text })
     },
   },
-  {
-    title: "题目数量",
-    key: "problems_count",
-    width: 100,
-  },
   {
     title: "创建时间",
     key: "create_time",