Update missing-route-changes-spa-agent.mdx

Removed language which identified this page was last updated at some point in 2021.

src/content/docs/browser/single-page-app-monitoring/troubleshooting/missing-route-changes-spa-agent.mdx

@@ -14,7 +14,7 @@ redirects:
 
 You are using the Pro + SPA agent, but you are not seeing all of the `route change` browser interactions you expect.
 
-We are aware that this can be frustrating. Our goal throughout 2021 is to reevaluate the SPA feature functionality, making it simpler and more reliable, starting with the methods we use to detect and capture route changes. Additionally, we plan to add new frameworks and use cases to our testing suite based on your feedback and examples. Likely this work will include new APIs as well as framework-specific plug-ins. Check our [release notes](/docs/release-notes/new-relic-browser-release-notes/browser-agent-release-notes) for the latest updates.
+We are aware that this can be frustrating. Our ongoing goal is to improve SPA feature functionality, making it simpler and more reliable, starting with the methods we use to detect and capture route changes. 
 
 ## Solution