cli/command: remove deprecated EventHandler, InitEventHandler

These were deprecated in 46afd26c45
in v26.0, and have no known users.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/events_utils.go

@@ -1,51 +0,0 @@
-package command
-
-import (
-	"sync"
-
-	"github.com/docker/docker/api/types/events"
-	"github.com/sirupsen/logrus"
-)
-
-// EventHandler is abstract interface for user to customize
-// own handle functions of each type of events
-//
-// Deprecated: EventHandler is no longer used, and will be removed in the next release.
-type EventHandler interface {
-	Handle(action events.Action, h func(events.Message))
-	Watch(c <-chan events.Message)
-}
-
-// InitEventHandler initializes and returns an EventHandler
-//
-// Deprecated: InitEventHandler is no longer used, and will be removed in the next release.
-func InitEventHandler() EventHandler {
-	return &eventHandler{handlers: make(map[events.Action]func(events.Message))}
-}
-
-type eventHandler struct {
-	handlers map[events.Action]func(events.Message)
-	mu       sync.Mutex
-}
-
-func (w *eventHandler) Handle(action events.Action, h func(events.Message)) {
-	w.mu.Lock()
-	w.handlers[action] = h
-	w.mu.Unlock()
-}
-
-// Watch ranges over the passed in event chan and processes the events based on the
-// handlers created for a given action.
-// To stop watching, close the event chan.
-func (w *eventHandler) Watch(c <-chan events.Message) {
-	for e := range c {
-		w.mu.Lock()
-		h, exists := w.handlers[e.Action]
-		w.mu.Unlock()
-		if !exists {
-			continue
-		}
-		logrus.Debugf("event handler: received event: %v", e)
-		go h(e)
-	}
-}