diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/zookeeper/ZooKeeperStateHandleStore.java b/flink-runtime/src/main/java/org/apache/flink/runtime/zookeeper/ZooKeeperStateHandleStore.java
index <HASH>..<HASH> 100644
--- a/flink-runtime/src/main/java/org/apache/flink/runtime/zookeeper/ZooKeeperStateHandleStore.java
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/zookeeper/ZooKeeperStateHandleStore.java
@@ -31,8 +31,6 @@ import org.apache.zookeeper.data.Stat;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.annotation.Nullable;
-
 import java.io.IOException;
 import java.io.Serializable;
 import java.util.ArrayList;
@@ -328,7 +326,6 @@ public class ZooKeeperStateHandleStore<T extends Serializable> {
 	 * @return True if the state handle could be released
 	 * @throws Exception If the ZooKeeper operation or discarding the state handle fails
 	 */
-	@Nullable
 	public boolean releaseAndTryRemove(String pathInZooKeeper) throws Exception {
 		checkNotNull(pathInZooKeeper, "Path in ZooKeeper");
[hotfix][chck] Remove Nullable annotation from method with primitive return type

ZooKeeperStateHandleStore#releaseAndTryRemove returns a primitive boolean and, thus,
does not need a @Nullable annotation.