remove outdated discussion links

Author: jacobbednarz

.github/ISSUE_TEMPLATE/config.yml

@@ -1,9 +1,5 @@
 blank_issues_enabled: false
 contact_links:
-  - name: v3.0.0 Beta feedback
-    url: https://github.com/cloudflare/cloudflare-typescript/discussions/135
-    about: |
-      If you have a feature request or feedback on our new v3 library, please comment in our discussion page.
   - name: Cloudflare support
     url: https://developers.cloudflare.com/support/contacting-cloudflare-support
     about: |