Post migration assertion fixes

Signed-off-by: Daniel Nephin <dnephin@docker.com>
Upstream-commit: c9e52bd0da0461e605a3678b85702f83081504a7
Component: engine

components/engine/pkg/plugins/plugin_test.go

@@ -15,7 +15,6 @@ import (
 	"github.com/docker/docker/pkg/plugins/transport"
 	"github.com/docker/go-connections/tlsconfig"
 	"github.com/gotestyourself/gotestyourself/assert"
-	is "github.com/gotestyourself/gotestyourself/assert/cmp"
 	"github.com/pkg/errors"
 )
 
@@ -55,7 +54,6 @@ func testActive(t *testing.T, p *Plugin) {
 		t.Fatalf("%s:%d: deadlock in waitActive", filepath.Base(f), l)
 	case <-done:
 	}
-
 }
 
 func TestGet(t *testing.T) {
@@ -79,12 +77,11 @@ func TestGet(t *testing.T) {
 
 	// check negative case where plugin fruit doesn't implement banana
 	_, err = Get("fruit", "banana")
-	assert.Check(t, is.DeepEqual(errors.Cause(err), ErrNotImplements))
+	assert.Equal(t, errors.Cause(err), ErrNotImplements)
 
 	// check negative case where plugin vegetable doesn't exist
 	_, err = Get("vegetable", "potato")
-	assert.Check(t, is.DeepEqual(errors.Cause(err), ErrNotFound))
-
+	assert.Equal(t, errors.Cause(err), ErrNotFound)
 }
 
 func TestPluginWithNoManifest(t *testing.T) {