removed references to Dynamic Sampling (#6548)

Author: ale-cota

src/docs/product/performance/metrics.mdx

@@ -99,7 +99,7 @@ The calculation method determines if duration is defined as the entire length of
 
 <Note>
 
-This feature is only available to organization on our latest plans which include [Dynamic Sampling](/product/data-management-settings/dynamic-sampling/). Customers on legacy plans must move to one of these plans in order to access custom metrics. For general questions about how you can move to plan that includes Dynamic Sampling and custom metrics, please contact [[email protected]](mailto:[email protected]). For information on volume pricing, please contact [[email protected]](mailto:[email protected]).
+This feature is only available on the latest version of our plans. Anyone in your org with owner or billing-level permissions can update your plan by going to Settings > Subscription, and clicking the "Manage Subscription" button.
 
 </Note>
 

src/platforms/common/performance/instrumentation/performance-metrics.mdx

@@ -42,7 +42,7 @@ Sentry's SDKs support sending performance metrics data to Sentry. These are nume
 
 <Note>
 
-Although you can set custom metrics in the SDK, the ability to see the data generated by these metrics is only available to organizations on our latest plans which include [Dynamic Sampling](/product/data-management-settings/dynamic-sampling/). Customers on legacy plans must move to one of these plans in order to access custom metrics. For general questions about how you can move to plan that includes Dynamic Sampling and custom metrics, please contact [[email protected]](mailto:[email protected]). For information on volume pricing, please contact [[email protected]](mailto:[email protected]).
+Although you can set custom metrics in the SDK, the ability to see the data generated by these metrics is only available to organizations on our latest plans. Anyone in your org with owner or billing-level permissions can update your plan by going to Settings > Subscription, and clicking the "Manage Subscription" button.
 
 </Note>