Remove outdated Workflow Update notes

Author: drewhoskins-temporal

docs/encyclopedia/workflow-message-passing/sending-messages.mdx

@@ -88,21 +88,6 @@ Signal-With-Start is a great tool for lazily initializing Workflows. When you se
 
 ### Sending Updates {#sending-updates}
 
-:::note
-
-To use the Workflow Update feature in versions prior to v1.25.0, it must be manually enabled.
-
-Set the [frontend.enableUpdateWorkflowExecution](https://github.com/temporalio/temporal/blob/main/common/dynamicconfig/constants.go) and [frontend.enableUpdateWorkflowExecutionAsyncAccepted](https://github.com/temporalio/temporal/blob/main/common/dynamicconfig/constants.go) dynamic config values to `true`.
-
-For example, with the Temporal CLI, run these commands:
-
-```command
-temporal server start-dev --dynamic-config-value frontend.enableUpdateWorkflowExecution=true
-temporal server start-dev --dynamic-config-value frontend.enableUpdateWorkflowExecutionAsyncAccepted=true
-```
-
-:::
-
 Updates can be sent from a Temporal Client or the Temporal CLI to a Workflow Execution. This call is synchronous and will call into the corresponding Update handler. If you’d rather make an asynchronous request, you should use Signals.
 
 In most languages (except Go), you may call `executeUpdate` to complete an Update and get its result.

sample-apps/go/features/updates/README.md

@@ -12,15 +12,6 @@ It contains a single count integer variable. The Update handler adds the new int
 The second Workflow shows how to validate the Update and then handle it.
 It also contains a single count integer variable, but the validator function rejects the new integer if it is not positive.
 
-Note that you may need to enable Updates if you are using a Temporal Server version that is older than 1.21.
-For example, when using the Temporal CLI dev server:
-
-```
-temporal server start-dev --dynamic-config-value frontend.enableUpdateWorkflowExecution=true
-```
-
-Update validator functions may not work with Server versions older than 1.21.
-
 ### How to run the sample
 
 Run the Worker: