diff --git a/terraform/transform_flatten.go b/terraform/transform_flatten.go
deleted file mode 100644
index c727b3523..000000000
--- a/terraform/transform_flatten.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package terraform
-
-import (
-	"github.com/hashicorp/terraform/dag"
-)
-
-// GraphNodeFlatGraph must be implemented by nodes that have subgraphs
-// that they want flattened into the graph.
-type GraphNodeFlatGraph interface {
-	FlattenGraph() *Graph
-}
-
-// GraphNodeFlattenable must be implemented by all nodes that can be
-// flattened. If a FlattenGraph returns any nodes that can't be flattened,
-// it will be an error.
-//
-// If Flatten returns nil for the Vertex along with a nil error, it will
-// removed from the graph.
-type GraphNodeFlattenable interface {
-	Flatten(path []string) (dag.Vertex, error)
-}
diff --git a/terraform/transform_provisioner.go b/terraform/transform_provisioner.go
index b5945261e..f49d82410 100644
--- a/terraform/transform_provisioner.go
+++ b/terraform/transform_provisioner.go
@@ -111,18 +111,6 @@ func (t *MissingProvisionerTransformer) Transform(g *Graph) error {
 				NameValue: p,
 				PathValue: path,
 			}
-			if len(path) > 0 {
-				// If we have a path, we do the flattening immediately. This
-				// is to support new-style graph nodes that are already
-				// flattened.
-				if fn, ok := newV.(GraphNodeFlattenable); ok {
-					var err error
-					newV, err = fn.Flatten(path)
-					if err != nil {
-						return err
-					}
-				}
-			}
 
 			// Add the missing provisioner node to the graph
 			m[key] = g.Add(newV)