remove: 刪除部分多餘的代碼

scripts/helpers/page.js

@@ -70,9 +70,3 @@ hexo.extend.helper.register('injectHtml', function (data) {
   }
   return result
 })
-
-hexo.extend.helper.register('post_edit', function(src) {
-  const { post_edit } = this.theme;
-  if (!post_edit.enable) return '';
-  return post_edit.url + src
-})