remove ExtensionInterface and related functions/implementations (#644)

Signed-off-by: Joe Lanford <joe.lanford@gmail.com>

api/v1alpha1/clusterextension_types.go

@@ -18,7 +18,6 @@ package v1alpha1
 
 import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/types"
 
 	"github.com/operator-framework/operator-controller/internal/conditionsets"
 )
@@ -159,17 +158,3 @@ type ClusterExtensionList struct {
 func init() {
 	SchemeBuilder.Register(&ClusterExtension{}, &ClusterExtensionList{})
 }
-
-func (r *ClusterExtension) GetPackageSpec() *ExtensionSourcePackage {
-	p := &ExtensionSourcePackage{}
-
-	p.Channel = r.Spec.Channel
-	p.Name = r.Spec.PackageName
-	p.Version = r.Spec.Version
-
-	return p
-}
-
-func (r *ClusterExtension) GetUID() types.UID {
-	return r.ObjectMeta.GetUID()
-}

api/v1alpha1/extension_types.go

@@ -18,7 +18,6 @@ package v1alpha1
 
 import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/types"
 )
 
 type ExtensionManagedState string
@@ -125,11 +124,3 @@ type ExtensionList struct {
 func init() {
 	SchemeBuilder.Register(&Extension{}, &ExtensionList{})
 }
-
-func (r *Extension) GetPackageSpec() *ExtensionSourcePackage {
-	return r.Spec.Source.Package.DeepCopy()
-}
-
-func (r *Extension) GetUID() types.UID {
-	return r.ObjectMeta.GetUID()
-}