cli/command/registry: remove deprecated OauthLoginEscapeHatchEnvVar

This const was added in 846ecf5, but
only used internally; commit 18cdc25
deprecated the const, which was included in the 28.4 release.

This patch removes the exported const, as it's unused.

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: thaJeztah

cli/command/registry/login.go

@@ -183,11 +183,6 @@ func loginWithStoredCredentials(ctx context.Context, dockerCLI command.Cli, auth
 	return response.Status, err
 }
 
-// OauthLoginEscapeHatchEnvVar disables the browser-based OAuth login workflow.
-//
-// Deprecated: this const was only used internally and will be removed in the next release.
-const OauthLoginEscapeHatchEnvVar = "DOCKER_CLI_DISABLE_OAUTH_LOGIN"
-
 const oauthLoginEscapeHatchEnvVar = "DOCKER_CLI_DISABLE_OAUTH_LOGIN"
 
 func isOauthLoginDisabled() bool {