Remove topics frontmatter from discussions content (#59856)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: subatoi <32935794+subatoi@users.noreply.github.com>

Author: Copilot

content/discussions/managing-discussions-for-your-community/viewing-insights-for-your-discussions.md

@@ -6,8 +6,6 @@ versions:
   fpt: '*'
   ghes: '*'
   ghec: '*'
-topics:
-  - Discussions
 shortTitle: View discussions insights
 ---