reference analytics docs in prepping for ga and remove the dead links to ga from analytics plugin docs

Signed-off-by: Peter Macdonald <peterm4c@pm.me>

docs/golden-path/adoption/006-preparing-for-ga.md

@@ -70,7 +70,7 @@ missing integrations that are blocking adoption.
 ### Use analytics to guide your decisions
 
 Backstage does not ship with usage analytics by default, but you can integrate
-an analytics provider through the plugin ecosystem. Tracking which parts of
+an analytics provider through the plugin ecosystem, you can find more information on this in the [Analytics](../../plugins/analytics.md) section of the Backstage documentation. Tracking which parts of
 Backstage developers actually use helps you make informed decisions about where
 to invest your time.
 

docs/plugins/analytics.md

@@ -42,7 +42,6 @@ choice below.
 
 | Analytics Tool                        | Support Status |
 | ------------------------------------- | -------------- |
-| [Google Analytics][ga]                | Yes ✅         |
 | [Google Analytics 4][ga4]             | Yes ✅         |
 | [New Relic Browser][newrelic-browser] | Community ✅   |
 | [Matomo][matomo]                      | Community ✅   |
@@ -53,7 +52,6 @@ To suggest an integration, please [open an issue][add-tool] for the analytics
 tool your organization uses. Or jump to [Writing Integrations][int-howto] to
 learn how to contribute the integration yourself!
 
-[ga]: https://github.com/backstage/community-plugins/blob/main/workspaces/analytics/plugins/analytics-module-ga/README.md
 [ga4]: https://github.com/backstage/community-plugins/blob/main/workspaces/analytics/plugins/analytics-module-ga4/README.md
 [newrelic-browser]: https://github.com/backstage/community-plugins/blob/main/workspaces/analytics/plugins/analytics-module-newrelic-browser/README.md
 [qm]: https://github.com/quantummetric/analytics-module-qm/blob/main/README.md