Unmute testUniDirectionalIndexFollowing (#106886)

x-pack/qa/rolling-upgrade-multi-cluster/src/test/java/org/elasticsearch/upgrades/CcrRollingUpgradeIT.java

@@ -28,7 +28,6 @@ import static org.hamcrest.Matchers.equalTo;
 
 public class CcrRollingUpgradeIT extends AbstractMultiClusterUpgradeTestCase {
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/102000")
     public void testUniDirectionalIndexFollowing() throws Exception {
         logger.info("clusterName={}, upgradeState={}", clusterName, upgradeState);