Merge pull request #59714 from hzxuzhonghu/clean-up-goroutinemap

Automatic merge from submit-queue (batch tested with PRs 60157, 60337, 60246, 59714, 60467). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

util/goroutinemap code cleanup

**What this PR does / why we need it**:
/kind cleanup

code cleanup

**Release note**:

```release-note
NONE
```

pkg/util/goroutinemap/goroutinemap.go

@@ -24,27 +24,12 @@ package goroutinemap
 import (
 	"fmt"
 	"sync"
-	"time"
 
 	"github.com/golang/glog"
 	k8sRuntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/kubernetes/pkg/util/goroutinemap/exponentialbackoff"
 )
 
-const (
-	// initialDurationBeforeRetry is the amount of time after an error occurs
-	// that GoRoutineMap will refuse to allow another operation to start with
-	// the same operation name (if exponentialBackOffOnError is enabled). Each
-	// successive error results in a wait 2x times the previous.
-	initialDurationBeforeRetry = 500 * time.Millisecond
-
-	// maxDurationBeforeRetry is the maximum amount of time that
-	// durationBeforeRetry will grow to due to exponential backoff.
-	// Value is slightly offset from 2 minutes to make timeouts due to this
-	// constant recognizable.
-	maxDurationBeforeRetry = 2*time.Minute + 1*time.Second
-)
-
 // GoRoutineMap defines a type that can run named goroutines and track their
 // state.  It prevents the creation of multiple goroutines with the same name
 // and may prevent recreation of a goroutine until after the a backoff time