Fix build

Author: alexey-ivanov-es

x-pack/plugin/migrate/src/main/java/org/elasticsearch/system_indices/task/SystemIndexMigrationInfo.java

@@ -22,7 +22,6 @@
 import org.elasticsearch.indices.SystemIndices;
 import org.elasticsearch.plugins.SystemIndexPlugin;
 
-import java.util.Comparator;
 import java.util.Map;
 import java.util.Objects;
 import java.util.stream.Stream;
@@ -46,10 +45,6 @@ final class SystemIndexMigrationInfo extends SystemResourceMigrationInfo {
     private final SystemIndices.Feature owningFeature;
     private final boolean allowsTemplates;
 
-    private static final Comparator<SystemIndexMigrationInfo> SAME_CLASS_COMPARATOR = Comparator.comparing(
-        SystemIndexMigrationInfo::getFeatureName
-    ).thenComparing(SystemIndexMigrationInfo::getCurrentIndexName);
-
     private SystemIndexMigrationInfo(
         IndexMetadata currentIndex,
         String featureName,
@@ -182,11 +177,6 @@ Client createClient(Client baseClient) {
         return new OriginSettingClient(baseClient, this.getOrigin());
     }
 
-    @Override
-    public int compareTo(SystemIndexMigrationInfo o) {
-        return SAME_CLASS_COMPARATOR.compare(this, o);
-    }
-
     @Override
     public String toString() {
         return "IndexUpgradeInfo["

x-pack/plugin/migrate/src/test/java/org/elasticsearch/system_indices/action/TransportGetFeatureUpgradeStatusActionTests.java

@@ -24,8 +24,8 @@
 import org.elasticsearch.system_indices.task.SingleFeatureMigrationResult;
 import org.elasticsearch.test.ESTestCase;
 
-import java.util.Collections;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;