chore: tweaks

Author: ulivz

Diff for: CHANGELOG.md

@@ -22,24 +22,6 @@
 ### Features
 
 * **$core:** support global layout (close: [#1226](https://github.com/vuejs/vuepress/issues/1226)) ([c91f55a](https://github.com/vuejs/vuepress/commit/c91f55a))
-
-  From now on, users have the ability to use a custom global layout component via [siteConfig](https://v1.vuepress.vuejs.org/miscellaneous/glossary.html#siteconfig) or [themeEntryFile](https://v1.vuepress.vuejs.org/miscellaneous/glossary.html#themeentryfile):
-  
-  ```js
-  module.exports = {
-    globalLayout: '/path/to/your/global/vue/sfc'
-  }
-  ```
-
-  Here is the [content of default global layout component](https://github.com/vuejs/vuepress/blob/master/packages/%40vuepress/core/lib/app/components/GlobalLayout.vue), 
-  Also, you can follow the convention, directly create a component `.vuepress/components/GlobalLayout.vue` or `themePath/layouts/GlobalLayout.vue` without any config. the loading priority is as follows: 
-  
-  - siteConfig
-  - siteAgreement
-  - themeEntry
-  - themeAgreement
-  - default
-
 * **$theme-default:** disable search box via frontmatter (close: [#1287](https://github.com/vuejs/vuepress/issues/1287)) ([#1288](https://github.com/vuejs/vuepress/issues/1288)) ([54e9eb0](https://github.com/vuejs/vuepress/commit/54e9eb0))