Remove --name flag from service update

The --name flag was inadvertently added to
docker service update, but is not supported,
as it has various side-effects (e.g., existing
tasks are not renamed).

This removes the flag from the service update
command.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 047e44eeb186a8bde41765a44c5966a150fa84f3
Component: engine

components/engine/docs/reference/api/docker_remote_api_v1.24.md

@@ -4846,7 +4846,7 @@ image](#create-an-image) section for more details.
 
 **JSON Parameters**:
 
-- **Name** – User-defined name for the service.
+- **Name** – User-defined name for the service. Note that renaming services is not supported.
 - **Labels** – A map of labels to associate with the service (e.g., `{"key":"value", "key2":"value2"}`).
 - **TaskTemplate** – Specification of the tasks to start as part of the new service.
     - **ContainerSpec** - Container settings for containers started as part of this task.

components/engine/docs/reference/api/docker_remote_api_v1.25.md

@@ -5375,7 +5375,7 @@ image](#create-an-image) section for more details.
 
 **JSON Parameters**:
 
-- **Name** – User-defined name for the service.
+- **Name** – User-defined name for the service. Note that renaming services is not supported.
 - **Labels** – A map of labels to associate with the service (e.g., `{"key":"value", "key2":"value2"}`).
 - **TaskTemplate** – Specification of the tasks to start as part of the new service.
     - **ContainerSpec** - Container settings for containers started as part of this task.