ZOOKEEPER-3924: Netty and JLine Licenses are inconsistent with jars in the binary tarball in 3.6.2 rc0

- Fix license file names
- Remove legacy pom.template file (for Ant based build ?)

Author: Enrico Olivelli <eolivelli@apache.org>

Reviewers: andor@apache.org

Closes #1449 from eolivelli/fix/ZOOKEEPER-3924-netty-lic

zookeeper-server/src/main/resources/pom.template

@@ -1,41 +0,0 @@
-SKIP_LINE  ***************************************************************
-SKIP_LINE  * Licensed to the Apache Software Foundation (ASF) under one
-SKIP_LINE  * or more contributor license agreements.  See the NOTICE file
-SKIP_LINE  * distributed with this work for additional information
-SKIP_LINE  * regarding copyright ownership.  The ASF licenses this file
-SKIP_LINE  * to you under the Apache License, Version 2.0 (the
-SKIP_LINE  * "License"); you may not use this file except in compliance
-SKIP_LINE  * with the License.  You may obtain a copy of the License at
-SKIP_LINE  * 
-SKIP_LINE  *   http://www.apache.org/licenses/LICENSE-2.0
-SKIP_LINE  * 
-SKIP_LINE  * Unless required by applicable law or agreed to in writing,
-SKIP_LINE  * software distributed under the License is distributed on an
-SKIP_LINE  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-SKIP_LINE  * KIND, either express or implied.  See the License for the
-SKIP_LINE  * specific language governing permissions and limitations
-SKIP_LINE  * under the License.
-SKIP_LINE  ***************************************************************
-<?xml version="1.0" encoding="UTF-8"?>
-${ivy.pom.license}
-${ivy.pom.header}
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>${ivy.pom.groupId}</groupId>
-  <artifactId>${ivy.pom.artifactId}</artifactId>
-  <packaging>${ivy.pom.packaging}</packaging>
-  <version>${ivy.pom.version}</version>
-  <name>${ivy.pom.name}</name>
-  <description>${ivy.pom.description}</description>
-  <url>${ivy.pom.url}</url>
-
-  <licenses>
-    <license>
-      <name>The Apache Software License, Version 2.0</name>
-      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
-      <distribution>repo</distribution>
-   </license>
-  </licenses>
-</project>