cli/command: deprecate DockerCli.DefaultVersion

This function was used internally, but is no longer used. There are
no known users of this method, so already removing it from the Cli
interface.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 40fe242)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit aad9f7d)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

cli/command/cli.go

@@ -49,7 +49,6 @@ type Cli interface {
 	config.Provider
 	ServerInfo() ServerInfo
 	DefaultVersion() string
-	CurrentVersion() string
 	ContentTrustEnabled() bool
 	BuildKitEnabled() (bool, error)
 	ContextStore() store.Store
@@ -90,6 +89,8 @@ type DockerCli struct {
 }
 
 // DefaultVersion returns [api.DefaultVersion].
+//
+// Deprecated: this function is no longer used and will be removed in the next release.
 func (*DockerCli) DefaultVersion() string {
 	return api.DefaultVersion
 }