Remove dependency on jvm-attach. (#12989)

This dependency was no longer needed after #12481, but remained because
it was used for a (now useless) test. This patch removes the test and
the dependency.

core/pom.xml

@@ -276,10 +276,6 @@
       dependency are copied as resources. See maven-dependency-plugin configuration and <resources> below. -->
       <scope>provided</scope>
     </dependency>
-    <dependency>
-      <groupId>org.gridkit.lab</groupId>
-      <artifactId>jvm-attach-api</artifactId>
-    </dependency>
 
     <!-- Extra dependency for http-client -->
     <dependency>

core/src/test/java/org/apache/druid/java/util/metrics/GcNameTest.java

@@ -1,33 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you 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.apache.druid.java.util.metrics;
-
-import org.gridkit.lab.jvm.perfdata.JStatData;
-
-public class GcNameTest
-{
-
-  public static void main(String[] args)
-  {
-    JStatData jStatData = JStatData.connect(SigarUtil.getCurrentProcessId());
-    System.out.println(jStatData.getAllCounters().get("sun.gc.collector.0.name").getValue());
-    System.out.println(jStatData.getAllCounters().get("sun.gc.collector.1.name").getValue());
-  }
-}

licenses.yaml

@@ -2160,16 +2160,6 @@ notice: |
 
 ---
 
-name: JVM Attach API
-license_category: binary
-module: java-core
-license_name: Apache License version 2.0
-version: 1.5
-libraries:
-  - org.gridkit.lab: jvm-attach-api
-
----
-
 name: Hibernate Validator Engine
 license_category: binary
 module: java-core

pom.xml

@@ -841,11 +841,6 @@
                 <!-- Uses Netty 4.1.x -->
                 <version>2.5.3</version>
             </dependency>
-            <dependency>
-                <groupId>org.gridkit.lab</groupId>
-                <artifactId>jvm-attach-api</artifactId>
-                <version>1.5</version>
-            </dependency>
             <dependency>
                 <groupId>net.java.dev.jna</groupId>
                 <artifactId>jna</artifactId>