[#203] morph: Mark depracated methods

Skip staticcheck for depracated methods. Will be fixed soon.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-adm/internal/modules/morph/initialize_nns.go

@@ -286,6 +286,7 @@ func parseNNSResolveResult(res stackitem.Item) (util.Uint160, error) {
 func nnsIsAvailable(c Client, nnsHash util.Uint160, name string) (bool, error) {
 	switch ct := c.(type) {
 	case *rpcclient.Client:
+		//lint:ignore SA1019 https://git.frostfs.info/TrueCloudLab/frostfs-node/issues/202
 		return ct.NNSIsAvailable(nnsHash, name)
 	default:
 		b, err := unwrap.Bool(invokeFunction(c, nnsHash, "isAvailable", []any{name}, nil))