Remove wishlist links (#8981)

No issue

The uservoice wishlist has been pretty inactive and neglected for quite a long time now. Removing links to it from Ghost is the first step toward retiring it. We're still listening to user feedback in order to determine the Ghost roadmap, but simplifying the process around it.

.github/CONTRIBUTING.md

@@ -22,7 +22,6 @@ If you've **got some code** ✨ you want to [pull request](https://docs.ghost.or
 - [api documentation](https://api.ghost.org)
 - [self-hoster guide](http://docs.ghost.org/v1/)
 - [feature roadmap](https://trello.com/b/EceUgtCL/ghost-roadmap)
-- [feature wishlist](http://ideas.ghost.org)
 - [community guidelines](https://ghost.org/conduct/)
 - [dev blog](http://dev.ghost.org)
 

.github/ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 Welcome to Ghost's GitHub repo! 👋🎉
 
-Do you need help or have a question? Please come chat in Slack: https://ghost.org/slack 👫. Got an idea for a new feature? Please add it to our wishlist: http://ideas.ghost.org 🌟. Found a bug? Please fill out the sections below... thank you 👍
+Do you need help or have a question? Please come chat in Slack: https://ghost.org/slack 👫. Found a bug? Please fill out the sections below... thank you 👍
 
 If your issue is with Ghost CLI, please report it on the CLI repo ➡️ https://github.com/TryGhost/Ghost-CLI/issues/new.
 

README.md

@@ -10,7 +10,6 @@ The project is maintained by a non-profit organisation called the **Ghost Founda
 - [Theme Docs](http://themes.ghost.org/v1/)
 - [API Docs](https://api.ghost.org/)
 - [Contributing Guide](https://docs.ghost.org/v1/docs/contributing)
-- [Feature Requests](http://ideas.ghost.org/)
 - [Developer Blog](http://dev.ghost.org)
 - [Self-hoster Docs](http://docs.ghost.org/v1/)