diff --git a/pkg/controller/deployment/sync_test.go b/pkg/controller/deployment/sync_test.go
index 79389a01cd37..c9d071386d01 100644
--- a/pkg/controller/deployment/sync_test.go
+++ b/pkg/controller/deployment/sync_test.go
@@ -435,7 +435,7 @@ func TestDeploymentController_cleanupDeployment(t *testing.T) {
 
 		gotDeletions := 0
 		for _, action := range fake.Actions() {
-			if "delete" == action.GetVerb() {
+			if action.GetVerb() == "delete" {
 				gotDeletions++
 			}
 		}
diff --git a/pkg/controller/disruption/disruption.go b/pkg/controller/disruption/disruption.go
index 7e72dd1b03a4..b512fffc2b6f 100644
--- a/pkg/controller/disruption/disruption.go
+++ b/pkg/controller/disruption/disruption.go
@@ -714,7 +714,7 @@ func (dc *DisruptionController) buildDisruptedPodMap(pods []*v1.Pod, pdb *policy
 	result := make(map[string]metav1.Time)
 	var recheckTime *time.Time
 
-	if disruptedPods == nil || len(disruptedPods) == 0 {
+	if disruptedPods == nil {
 		return result, recheckTime
 	}
 	for _, pod := range pods {
diff --git a/pkg/controller/endpointslice/endpointset.go b/pkg/controller/endpointslice/endpointset.go
index 604f38ec82c8..6a651c4a3a14 100644
--- a/pkg/controller/endpointslice/endpointset.go
+++ b/pkg/controller/endpointslice/endpointset.go
@@ -68,8 +68,7 @@ func (s endpointSet) Has(item *discovery.Endpoint) bool {
 
 // Returns an endpoint matching the hash if contained in the set.
 func (s endpointSet) Get(item *discovery.Endpoint) *discovery.Endpoint {
-	got, _ := s[hashEndpoint(item)]
-	return got
+	return s[hashEndpoint(item)]
 }
 
 // UnsortedList returns the slice with contents in random order.
diff --git a/pkg/controller/garbagecollector/garbagecollector.go b/pkg/controller/garbagecollector/garbagecollector.go
index 814c15a33e84..33c9201716ec 100644
--- a/pkg/controller/garbagecollector/garbagecollector.go
+++ b/pkg/controller/garbagecollector/garbagecollector.go
@@ -66,7 +66,6 @@ type GarbageCollector struct {
 	dependencyGraphBuilder *GraphBuilder
 	// GC caches the owners that do not exist according to the API server.
 	absentOwnerCache *UIDCache
-	sharedInformers  controller.InformerFactory
 
 	workerLock sync.RWMutex
 }
diff --git a/pkg/controller/garbagecollector/graph.go b/pkg/controller/garbagecollector/graph.go
index 7282d51b6f63..4b4349794f79 100644
--- a/pkg/controller/garbagecollector/graph.go
+++ b/pkg/controller/garbagecollector/graph.go
@@ -83,7 +83,7 @@ func (n *node) markObserved() {
 func (n *node) isObserved() bool {
 	n.virtualLock.RLock()
 	defer n.virtualLock.RUnlock()
-	return n.virtual == false
+	return !n.virtual
 }
 
 func (n *node) markDeletingDependents() {
diff --git a/pkg/controller/namespace/deletion/namespaced_resources_deleter.go b/pkg/controller/namespace/deletion/namespaced_resources_deleter.go
index 4b07a6d73894..255e79b5220e 100644
--- a/pkg/controller/namespace/deletion/namespaced_resources_deleter.go
+++ b/pkg/controller/namespace/deletion/namespaced_resources_deleter.go
@@ -138,7 +138,7 @@ func (d *namespacedResourcesDeleter) Delete(nsName string) error {
 	}
 
 	// we have removed content, so mark it finalized by us
-	namespace, err = d.retryOnConflictError(namespace, d.finalizeNamespace)
+	_, err = d.retryOnConflictError(namespace, d.finalizeNamespace)
 	if err != nil {
 		// in normal practice, this should not be possible, but if a deployment is running
 		// two controllers to do namespace deletion that share a common finalizer token it's
@@ -188,20 +188,6 @@ func (d *namespacedResourcesDeleter) initOpCache() {
 	}
 }
 
-// Deletes the given namespace.
-func (d *namespacedResourcesDeleter) deleteNamespace(namespace *v1.Namespace) error {
-	var opts *metav1.DeleteOptions
-	uid := namespace.UID
-	if len(uid) > 0 {
-		opts = &metav1.DeleteOptions{Preconditions: &metav1.Preconditions{UID: &uid}}
-	}
-	err := d.nsClient.Delete(namespace.Name, opts)
-	if err != nil && !errors.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
 // ResourcesRemainingError is used to inform the caller that all resources are not yet fully removed from the namespace.
 type ResourcesRemainingError struct {
 	Estimate int64
diff --git a/pkg/controller/namespace/deletion/namespaced_resources_deleter_test.go b/pkg/controller/namespace/deletion/namespaced_resources_deleter_test.go
index 62c0b4683adb..1762c536c33b 100644
--- a/pkg/controller/namespace/deletion/namespaced_resources_deleter_test.go
+++ b/pkg/controller/namespace/deletion/namespaced_resources_deleter_test.go
@@ -82,7 +82,7 @@ func TestFinalizeNamespaceFunc(t *testing.T) {
 	if len(finalizers) != 1 {
 		t.Errorf("There should be a single finalizer remaining")
 	}
-	if "other" != string(finalizers[0]) {
+	if string(finalizers[0]) != "other" {
 		t.Errorf("Unexpected finalizer value, %v", finalizers[0])
 	}
 }