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/store/container/metadata.go

@@ -28,10 +28,9 @@ import (
 // 2) Metadata is checkpointed as containerd container label.
 
 // metadataVersion is current version of container metadata.
-const metadataVersion = "v1" // nolint
+const metadataVersion = "v1"
 
 // versionedMetadata is the internal versioned container metadata.
-// nolint
 type versionedMetadata struct {
 	// Version indicates the version of the versioned container metadata.
 	Version string

pkg/cri/store/container/status.go

@@ -61,10 +61,9 @@ import (
 //                      DELETED
 
 // statusVersion is current version of container status.
-const statusVersion = "v1" // nolint
+const statusVersion = "v1"
 
 // versionedStatus is the internal used versioned container status.
-// nolint
 type versionedStatus struct {
 	// Version indicates the version of the versioned container status.
 	Version string

pkg/cri/store/sandbox/metadata.go

@@ -29,10 +29,9 @@ import (
 // 2) Metadata is checkpointed as containerd container label.
 
 // metadataVersion is current version of sandbox metadata.
-const metadataVersion = "v1" // nolint
+const metadataVersion = "v1"
 
 // versionedMetadata is the internal versioned sandbox metadata.
-// nolint
 type versionedMetadata struct {
 	// Version indicates the version of the versioned sandbox metadata.
 	Version string