docs: prepare for v10 release

Author: kazupon

docs/guide/advanced/lite.md

@@ -1,10 +1,5 @@
 # Small size subset of Vue I18n
 
-:::warning NOTICE
-`petite-vue-i18n` **is not still GA.
-It will be GA with the release of Vue I18n v10.
-:::
-
 `petite-vue-i18n` is an alternative distribution of Vue I18n, which provides only minimal features.
 
 ## What is the difference from Vue I18n ?

docs/guide/installation.md

@@ -68,13 +68,3 @@ You can also use a specific version/tag via URLs like <https://unpkg.com/vue-i18
 
 You can also use a specific version/tag via URLs like <https://unpkg.com/[email protected]/dist/vue-i18n.esm-browser.js>
 
-
-## Nightly version
-
-Add the following line to the `dependencies` in `package.json`:
-
-```json
-"vue-i18n": "npm:@vue-i18n-nightly"
-```
-
-And then run `npm install` or `yarn install` or `pnpm install`.

docs/guide/migration/breaking10.md

@@ -1,9 +1,5 @@
 # Breaking Changes in v10
 
-:::warning NOTICE
-Vue I18n v10 **is still an alpha version**.
-:::
-
 ## Default enable for JIT compilation
 
 **Reason**: CSP problems can be solved and dynamic resources can be supported