drop unused code pointed out by linter

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

pkg/controller/nodeipam/ipam/cidr_allocator.go

@@ -61,20 +61,8 @@ const (
 	// The no. of NodeSpec updates NC can process concurrently.
 	cidrUpdateWorkers = 30
 
-	// The max no. of NodeSpec updates that can be enqueued.
-	cidrUpdateQueueSize = 5000
-
 	// cidrUpdateRetries is the no. of times a NodeSpec update will be retried before dropping it.
 	cidrUpdateRetries = 3
-
-	// updateRetryTimeout is the time to wait before requeing a failed node for retry
-	updateRetryTimeout = 250 * time.Millisecond
-
-	// maxUpdateRetryTimeout is the maximum amount of time between timeouts.
-	maxUpdateRetryTimeout = 5 * time.Second
-
-	// updateMaxRetries is the max retries for a failed node
-	updateMaxRetries = 10
 )
 
 // nodePollInterval is used in listing node

pkg/controller/nodeipam/node_ipam_controller.go

@@ -19,9 +19,6 @@ package nodeipam
 import (
 	"context"
 	"fmt"
-	"net"
-	"time"
-
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	coreinformers "k8s.io/client-go/informers/core/v1"
 	clientset "k8s.io/client-go/kubernetes"
@@ -33,18 +30,7 @@ import (
 	controllersmetrics "k8s.io/component-base/metrics/prometheus/controllers"
 	"k8s.io/klog/v2"
 	"k8s.io/kubernetes/pkg/controller/nodeipam/ipam"
-)
-
-const (
-	// ipamResyncInterval is the amount of time between when the cloud and node
-	// CIDR range assignments are synchronized.
-	ipamResyncInterval = 30 * time.Second
-	// ipamMaxBackoff is the maximum backoff for retrying synchronization of a
-	// given in the error state.
-	ipamMaxBackoff = 10 * time.Second
-	// ipamInitialRetry is the initial retry interval for retrying synchronization of a
-	// given in the error state.
-	ipamInitialBackoff = 250 * time.Millisecond
+	"net"
 )
 
 // ipamController is an interface abstracting an interface for