remove deprecated utility
Change-Id: Ia40508ee302225d8e9955e0d3d0b664e088c014e
diff --git a/utils/misc/src/main/java/org/onlab/util/NewConcurrentHashMap.java b/utils/misc/src/main/java/org/onlab/util/NewConcurrentHashMap.java
deleted file mode 100644
index 03d141f..0000000
--- a/utils/misc/src/main/java/org/onlab/util/NewConcurrentHashMap.java
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright 2014-present Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.onlab.util;
-
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
-
-import org.apache.commons.lang3.concurrent.ConcurrentInitializer;
-
-/**
- * Creates an instance of new ConcurrentHashMap on each {@link #get()} call.
- * <p>
- * To be used with
- * {@link org.apache.commons.lang3.concurrent.ConcurrentUtils#createIfAbsent}
- * </p>
- *
- * @param <K> ConcurrentHashMap key type
- * @param <V> ConcurrentHashMap value type
- *
- * @deprecated in Hummingbird (1.7.0)
- */
-@Deprecated
-public final class NewConcurrentHashMap<K, V>
- implements ConcurrentInitializer<ConcurrentMap<K, V>> {
-
- public static final NewConcurrentHashMap<?, ?> INSTANCE = new NewConcurrentHashMap<>();
-
- @SuppressWarnings("unchecked")
- public static <K, V> NewConcurrentHashMap<K, V> ifNeeded() {
- return (NewConcurrentHashMap<K, V>) INSTANCE;
- }
-
- @Override
- public ConcurrentMap<K, V> get() {
- return new ConcurrentHashMap<>();
- }
-}