chore(readme): remove CLI 5 beta message

imhoffd · imhoffd · commit 8dded317cb43 · 2019-05-29T14:37:48.000-05:00
diff --git a/README.md b/README.md
@@ -6,14 +6,6 @@
 
 The Ionic command line interface (CLI) is your go-to tool for developing [Ionic][ionic-homepage] apps.
 
-#### Want to try CLI 5 (beta)? :hatching_chick:
-
-* Details :point_right: [#3915](https://github.com/ionic-team/ionic-cli/issues/3915#issue-423328190)
-* `npm install -g ionic@beta`
-* Leave feedback by creating issues :blush:
-
----
-
 ### Installation
 
 ```
