Remove unnecessary type conversion

Signed-off-by: mantuliu <240951888@qq.com>

pkg/kubelet/kubelet_server_journal.go

@@ -267,7 +267,7 @@ func (n *nodeLogQuery) Copy(w io.Writer) {
 	// set the deadline to the maximum across both runs
 	ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(30*time.Second))
 	defer cancel()
-	boot := int(0)
+	boot := 0
 	if n.Boot != nil {
 		boot = *n.Boot
 	}

pkg/kubelet/pod_workers.go

@@ -1652,7 +1652,7 @@ func killPodNow(podWorkers PodWorkers, recorder record.EventRecorder) eviction.K
 
 		// we timeout and return an error if we don't get a callback within a reasonable time.
 		// the default timeout is relative to the grace period (we settle on 10s to wait for kubelet->runtime traffic to complete in sigkill)
-		timeout := int64(gracePeriod + (gracePeriod / 2))
+		timeout := gracePeriod + (gracePeriod / 2)
 		minTimeout := int64(10)
 		if timeout < minTimeout {
 			timeout = minTimeout

pkg/kubelet/status/status_manager_test.go

@@ -495,7 +495,7 @@ func TestStatusNormalizationEnforcesMaxBytes(t *testing.T) {
 			Name: fmt.Sprintf("container%d", i),
 			LastTerminationState: v1.ContainerState{
 				Terminated: &v1.ContainerStateTerminated{
-					Message: strings.Repeat("abcdefgh", int(24+i%3)),
+					Message: strings.Repeat("abcdefgh", 24+i%3),
 				},
 			},
 		}

pkg/kubelet/types/pod_update_test.go

@@ -27,7 +27,7 @@ import (
 )
 
 var (
-	systemPriority      = int32(scheduling.SystemCriticalPriority)
+	systemPriority      = scheduling.SystemCriticalPriority
 	systemPriorityUpper = systemPriority + 1000
 )