remove unneeded nolint-comments (nolintlint), disable deprecated linters

Remove nolint-comments that weren't hit by linters, and remove the "structcheck"
and "varcheck" linters, as they have been deprecated:

    WARN [runner] The linter 'structcheck' is deprecated (since v1.49.0) due to: The owner seems to have abandoned the linter.  Replaced by unused.
    WARN [runner] The linter 'varcheck' is deprecated (since v1.49.0) due to: The owner seems to have abandoned the linter.  Replaced by unused.
    WARN [linters context] structcheck is disabled because of generics. You can track the evolution of the generics support by following the https://github.com/golangci/golangci-lint/issues/2649.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

pkg/cri/server/container_stats.go

@@ -41,7 +41,7 @@ func (c *criService) ContainerStats(ctx context.Context, in *runtime.ContainerSt
 	}
 
 	cs, err := c.containerMetrics(cntr.Metadata, resp.Metrics[0])
-	if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return nil (stats unimplemented)
+	if err != nil {
 		return nil, fmt.Errorf("failed to decode container metrics: %w", err)
 	}
 	return &runtime.ContainerStatsResponse{Stats: cs}, nil

pkg/cri/server/container_stats_list.go

@@ -61,7 +61,7 @@ func (c *criService) toCRIContainerStats(
 	containerStats := new(runtime.ListContainerStatsResponse)
 	for _, cntr := range containers {
 		cs, err := c.containerMetrics(cntr.Metadata, statsMap[cntr.ID])
-		if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return nil (metrics unimplemented)
+		if err != nil {
 			return nil, fmt.Errorf("failed to decode container metrics for %q: %w", cntr.ID, err)
 		}
 

pkg/cri/server/sandbox_stats.go

@@ -34,12 +34,12 @@ func (c *criService) PodSandboxStats(
 	}
 
 	metrics, err := metricsForSandbox(sandbox)
-	if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return nil (unimplemented metrics)
+	if err != nil {
 		return nil, fmt.Errorf("failed getting metrics for sandbox %s: %w", r.GetPodSandboxId(), err)
 	}
 
 	podSandboxStats, err := c.podSandboxStats(ctx, sandbox, metrics)
-	if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return nil (unimplemented metrics)
+	if err != nil {
 		return nil, fmt.Errorf("failed to decode pod sandbox metrics %s: %w", r.GetPodSandboxId(), err)
 	}
 

pkg/cri/server/sandbox_stats_list.go

@@ -34,12 +34,12 @@ func (c *criService) ListPodSandboxStats(
 	podSandboxStats := new(runtime.ListPodSandboxStatsResponse)
 	for _, sandbox := range sandboxes {
 		metrics, err := metricsForSandbox(sandbox)
-		if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return nil (unimplemented metrics)
+		if err != nil {
 			return nil, fmt.Errorf("failed to obtain metrics for sandbox %q: %w", sandbox.ID, err)
 		}
 
 		sandboxStats, err := c.podSandboxStats(ctx, sandbox, metrics)
-		if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return nil (unimplemented metrics)
+		if err != nil {
 			return nil, fmt.Errorf("failed to decode sandbox container metrics for sandbox %q: %w", sandbox.ID, err)
 		}
 		podSandboxStats.Stats = append(podSandboxStats.Stats, sandboxStats)

pkg/cri/server/service.go

@@ -113,7 +113,7 @@ type criService struct {
 	baseOCISpecs map[string]*oci.Spec
 	// allCaps is the list of the capabilities.
 	// When nil, parsed from CapEff of /proc/self/status.
-	allCaps []string //nolint:unused // Ignore on non-Linux
+	allCaps []string //nolint:nolintlint,unused // Ignore on non-Linux
 	// unpackDuplicationSuppressor is used to make sure that there is only
 	// one in-flight fetch request or unpack handler for a given descriptor's
 	// or chain ID.