Revert "[MNG-7586] Update Maven Resolver to 1.9.1 (#870)"

This reverts commit 113919a5ef.

maven-core/src/main/java/org/apache/maven/DefaultMaven.java

@@ -481,9 +481,6 @@ public class DefaultMaven
         }
     }
 
-    /**
-     * TODO: why is this method public?
-     */
     public RepositorySystemSession newRepositorySession( MavenExecutionRequest request )
     {
         return repositorySessionFactory.newRepositorySession( request );

maven-core/src/main/java/org/apache/maven/internal/aether/ResolverLifecycle.java

@@ -1,54 +0,0 @@
-package org.apache.maven.internal.aether;
-
-/*
- * 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.
- */
-
-import javax.annotation.PreDestroy;
-import javax.inject.Inject;
-import javax.inject.Named;
-import javax.inject.Provider;
-
-import org.eclipse.aether.RepositorySystem;
-import org.eclipse.sisu.EagerSingleton;
-
-import static java.util.Objects.requireNonNull;
-
-/**
- * Maven internal component that bridges container "shut down" to {@link RepositorySystem#shutdown()}.
- *
- * @since 3.9.0
- */
-@Named
-@EagerSingleton
-public final class ResolverLifecycle
-{
-    private final Provider<RepositorySystem> repositorySystemProvider;
-
-    @Inject
-    public ResolverLifecycle( Provider<RepositorySystem> repositorySystemProvider )
-    {
-        this.repositorySystemProvider = requireNonNull( repositorySystemProvider );
-    }
-
-    @PreDestroy
-    public void shutdown()
-    {
-        repositorySystemProvider.get().shutdown();
-    }
-}

pom.xml

@@ -64,7 +64,7 @@ under the License.
     <securityDispatcherVersion>2.0</securityDispatcherVersion>
     <cipherVersion>2.0</cipherVersion>
     <jxpathVersion>1.3</jxpathVersion>
-    <resolverVersion>1.9.1</resolverVersion>
+    <resolverVersion>1.8.2</resolverVersion>
     <slf4jVersion>1.7.36</slf4jVersion>
     <xmlunitVersion>2.6.4</xmlunitVersion>
     <maven.test.redirectTestOutputToFile>true</maven.test.redirectTestOutputToFile>