perf: remove permalink of deleted single page (#792)

#### What type of PR is this?

/kind improvement

#### What this PR does / why we need it:

移除自定义页面回收站中自定义页面的固定链接跳转入口。

#### Screenshots:

<img width="515" alt="image" src="https://user-images.githubusercontent.com/21301288/209045397-14a63c58-5f9f-49a4-8d4b-ed0e78496cda.png">


#### Special notes for your reviewer:

#### Does this PR introduce a user-facing change?


```release-note
None
```

src/modules/contents/pages/DeletedSinglePageList.vue

@@ -362,9 +362,6 @@ function handleClearKeyword() {
                 <VEntityField :title="singlePage.page.spec.title">
                   <template #description>
                     <VSpace>
-                      <span class="text-xs text-gray-500">
-                        {{ singlePage.page.status?.permalink }}
-                      </span>
                       <span class="text-xs text-gray-500">
                         访问量 {{ singlePage.stats.visit || 0 }}
                       </span>