remove various deprecated types and functions

cli/command/formatter/context.go

@@ -84,10 +84,3 @@ func (c *clientContextContext) Error() string {
 	// TODO(thaJeztah) add "--no-trunc" option to context ls and set default to 30 cols to match "docker service ps"
 	return Ellipsis(c.c.Error, maxErrLength)
 }
-
-// KubernetesEndpoint returns the kubernetes endpoint.
-//
-// Deprecated: support for kubernetes endpoints in contexts has been removed, and this formatting option will always be empty.
-func (c *clientContextContext) KubernetesEndpoint() string {
-	return ""
-}

cli/config/configfile/file.go

@@ -37,7 +37,6 @@ type ConfigFile struct {
 	PruneFilters         []string                     `json:"pruneFilters,omitempty"`
 	Proxies              map[string]ProxyConfig       `json:"proxies,omitempty"`
 	Experimental         string                       `json:"experimental,omitempty"`
-	StackOrchestrator    string                       `json:"stackOrchestrator,omitempty"` // Deprecated: swarm is now the default orchestrator, and this option is ignored.
 	CurrentContext       string                       `json:"currentContext,omitempty"`
 	CLIPluginsExtraDirs  []string                     `json:"cliPluginsExtraDirs,omitempty"`
 	Plugins              map[string]map[string]string `json:"plugins,omitempty"`

cli/context/docker/load.go

@@ -25,12 +25,6 @@ type EndpointMeta = context.EndpointMetaBase
 type Endpoint struct {
 	EndpointMeta
 	TLSData *context.TLSData
-
-	// Deprecated: Use of encrypted TLS private keys has been deprecated, and
-	// will be removed in a future release. Golang has deprecated support for
-	// legacy PEM encryption (as specified in RFC 1423), as it is insecure by
-	// design (see https://go-review.googlesource.com/c/go/+/264159).
-	TLSPassword string
 }
 
 // WithTLSData loads TLS materials for the endpoint

cli/context/store/store.go

@@ -494,20 +494,6 @@ func importEndpointTLS(tlsData *ContextTLSData, path string, data []byte) error
 	return nil
 }
 
-// IsErrContextDoesNotExist checks if the given error is a "context does not exist" condition.
-//
-// Deprecated: use github.com/docker/docker/errdefs.IsNotFound()
-func IsErrContextDoesNotExist(err error) bool {
-	return errdefs.IsNotFound(err)
-}
-
-// IsErrTLSDataDoesNotExist checks if the given error is a "context does not exist" condition
-//
-// Deprecated: use github.com/docker/docker/errdefs.IsNotFound()
-func IsErrTLSDataDoesNotExist(err error) bool {
-	return errdefs.IsNotFound(err)
-}
-
 type contextdir string
 
 func contextdirOf(name string) contextdir {