diff --git a/pkg/util/retryutil/retryutil.go b/pkg/util/retryutil/retryutil.go
deleted file mode 100644
index 6a51c96e4..000000000
--- a/pkg/util/retryutil/retryutil.go
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2017 The etcd-operator Authors
-//
-// 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.
-
-// https://github.com/coreos/etcd-operator/blob/master/pkg/util/retryutil/retry_util.go
-
-package retryutil
-
-import (
-	"fmt"
-	"time"
-)
-
-type RetryError struct {
-	n int
-}
-
-func (e *RetryError) Error() string {
-	return fmt.Sprintf("still failing after %d retries", e.n)
-}
-
-func IsRetryFailure(err error) bool {
-	_, ok := err.(*RetryError)
-	return ok
-}
-
-type ConditionFunc func() (bool, error)
-
-// Retry retries f every interval until after maxRetries.
-// The interval won't be affected by how long f takes.
-// For example, if interval is 3s, f takes 1s, another f will be called 2s later.
-// However, if f takes longer than interval, it will be delayed.
-func Retry(interval time.Duration, maxRetries int, f ConditionFunc) error {
-	if maxRetries <= 0 {
-		return fmt.Errorf("maxRetries (%d) should be > 0", maxRetries)
-	}
-	tick := time.NewTicker(interval)
-	defer tick.Stop()
-
-	for i := 0; ; i++ {
-		ok, err := f()
-		if err != nil {
-			return err
-		}
-		if ok {
-			return nil
-		}
-		if i == maxRetries {
-			break
-		}
-		<-tick.C
-	}
-	return &RetryError{maxRetries}
-}