diff --git a/runtime/flow/model.go b/runtime/flow/model.go
deleted file mode 100644
index df250b4..0000000
--- a/runtime/flow/model.go
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2015 The Vanadium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package Flow contains a super-interface of the Flow defined in v23/flow/model.go
-// to expose information that rpc implementors need to correctly implement the protocol
-// (i.e. VOM TypeEncoder, RPC BlessingCache).
-//
-// TODO(suharshs):  We currently do not want to expose those in the flow API
-// because the flow API should be independent of the RPC code, so this is
-// our current way of punting on this.
-package flow
-
-import (
-	"v.io/v23/flow"
-)
-
-// Flow is the interface for a flow-controlled channel multiplexed over underlying network connections.
-type Flow interface {
-	flow.Flow
-
-	// SharedData returns a SharedData cache used for all flows on the underlying authenticated
-	// connection.
-	SharedData() SharedData
-}
-
-// SharedData is a thread-safe store that allows data to be shared across the underlying
-// authenticated connection that a flow is multiplexed over.
-type SharedData interface {
-	// Get returns the 'value' associated with 'key'.
-	Get(key interface{}) interface{}
-
-	// GetOrInsert returns the 'value' associated with 'key'. If an entry already exists in the
-	// cache with the 'key', the 'value' is returned, otherwise 'create' is called to create a new
-	// value N, the cache is updated, and N is returned.  GetOrInsert may be called from
-	// multiple goroutines concurrently.
-	GetOrInsert(key interface{}, create func() interface{}) interface{}
-}