diff --git a/fuseutil/not_implemented_file_system.go b/fuseutil/not_implemented_file_system.go
deleted file mode 100644
index 9b21d95..0000000
--- a/fuseutil/not_implemented_file_system.go
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2015 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package fuseutil
-
-import (
-	"github.com/jacobsa/fuse"
-	"golang.org/x/net/context"
-)
-
-// Embed this within your file system type to inherit default implementations
-// of all methods that return fuse.ENOSYS.
-type NotImplementedFileSystem struct {
-}
-
-var _ fuse.FileSystem = &NotImplementedFileSystem{}
-
-func (fs *NotImplementedFileSystem) Init(
-	ctx context.Context,
-	req *fuse.InitRequest) (*fuse.InitResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) LookUpInode(
-	ctx context.Context,
-	req *fuse.LookUpInodeRequest) (*fuse.LookUpInodeResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) GetInodeAttributes(
-	ctx context.Context,
-	req *fuse.GetInodeAttributesRequest) (
-	*fuse.GetInodeAttributesResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) SetInodeAttributes(
-	ctx context.Context,
-	req *fuse.SetInodeAttributesRequest) (
-	*fuse.SetInodeAttributesResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) ForgetInode(
-	ctx context.Context,
-	req *fuse.ForgetInodeRequest) (*fuse.ForgetInodeResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) MkDir(
-	ctx context.Context,
-	req *fuse.MkDirRequest) (*fuse.MkDirResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) CreateFile(
-	ctx context.Context,
-	req *fuse.CreateFileRequest) (*fuse.CreateFileResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) RmDir(
-	ctx context.Context,
-	req *fuse.RmDirRequest) (*fuse.RmDirResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) Unlink(
-	ctx context.Context,
-	req *fuse.UnlinkRequest) (*fuse.UnlinkResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) OpenDir(
-	ctx context.Context,
-	req *fuse.OpenDirRequest) (*fuse.OpenDirResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) ReadDir(
-	ctx context.Context,
-	req *fuse.ReadDirRequest) (*fuse.ReadDirResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) ReleaseDirHandle(
-	ctx context.Context,
-	req *fuse.ReleaseDirHandleRequest) (*fuse.ReleaseDirHandleResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) OpenFile(
-	ctx context.Context,
-	req *fuse.OpenFileRequest) (*fuse.OpenFileResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) ReadFile(
-	ctx context.Context,
-	req *fuse.ReadFileRequest) (*fuse.ReadFileResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) WriteFile(
-	ctx context.Context,
-	req *fuse.WriteFileRequest) (*fuse.WriteFileResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) SyncFile(
-	ctx context.Context,
-	req *fuse.SyncFileRequest) (*fuse.SyncFileResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) FlushFile(
-	ctx context.Context,
-	req *fuse.FlushFileRequest) (*fuse.FlushFileResponse, error) {
-	return nil, fuse.ENOSYS
-}
-
-func (fs *NotImplementedFileSystem) ReleaseFileHandle(
-	ctx context.Context,
-	req *fuse.ReleaseFileHandleRequest) (*fuse.ReleaseFileHandleResponse, error) {
-	return nil, fuse.ENOSYS
-}