diff --git a/rename/rename_plan9.go b/rename/rename_plan9.go
deleted file mode 100644
index 6de293e..0000000
--- a/rename/rename_plan9.go
+++ /dev/null
@@ -1,47 +0,0 @@
-// The following is adapted from goleveldb
-// (https://github.com/syndtr/goleveldb) under the following license:
-//
-// Copyright 2012 Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimer in the
-// documentation and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package rename
-
-import (
-	"os"
-	"path/filepath"
-)
-
-// Atomic provides an atomic file rename.  newpath is replaced if it
-// already exists.
-func Atomic(oldpath, newpath string) error {
-	if _, err := os.Stat(newpath); err == nil {
-		if err := os.Remove(newpath); err != nil {
-			return err
-		}
-	}
-
-	_, fname := filepath.Split(newpath)
-	return os.Rename(oldpath, fname)
-}