cli/command/image: remove errdefs uses

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

Author: thaJeztah

cli/command/image/prune.go

@@ -11,8 +11,7 @@ import (
 	"github.com/docker/cli/cli/command/completion"
 	"github.com/docker/cli/internal/prompt"
 	"github.com/docker/cli/opts"
-	"github.com/docker/docker/errdefs"
-	units "github.com/docker/go-units"
+	"github.com/docker/go-units"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
@@ -76,7 +75,7 @@ func runPrune(ctx context.Context, dockerCli command.Cli, options pruneOptions)
 			return 0, "", err
 		}
 		if !r {
-			return 0, "", errdefs.Cancelled(errors.New("image prune has been cancelled"))
+			return 0, "", cancelledErr{errors.New("image prune has been cancelled")}
 		}
 	}
 
@@ -106,6 +105,10 @@ func runPrune(ctx context.Context, dockerCli command.Cli, options pruneOptions)
 	return spaceReclaimed, output, nil
 }
 
+type cancelledErr struct{ error }
+
+func (cancelledErr) Cancelled() {}
+
 // RunPrune calls the Image Prune API
 // This returns the amount of space reclaimed and a detailed output string
 func RunPrune(ctx context.Context, dockerCli command.Cli, all bool, filter opts.FilterOpt) (uint64, string, error) {