[core-edge] Remove unused remote lock infrastructure.

We only use local lock managers now, so there is no need to have
infrastructure for remote locking.

enterprise/core-edge/src/main/java/org/neo4j/coreedge/catchup/CatchupServer.java

@@ -40,8 +40,6 @@
 import org.neo4j.coreedge.catchup.tx.core.TxPullResponseEncoder;
 import org.neo4j.coreedge.server.ListenSocketAddress;
 import org.neo4j.coreedge.catchup.storecopy.edge.GetStoreRequestDecoder;
-import org.neo4j.coreedge.raft.locks.LockRequestDecoder;
-import org.neo4j.coreedge.raft.locks.LockResponseEncoder;
 import org.neo4j.coreedge.server.logging.ExceptionLoggingHandler;
 import org.neo4j.coreedge.catchup.tx.edge.TxStreamFinishedResponseEncoder;
 import org.neo4j.coreedge.catchup.storecopy.FileHeaderEncoder;
@@ -122,7 +120,6 @@ protected void initChannel( SocketChannel ch ) throws Exception
                         pipeline.addLast( new StoreCopyFinishedResponseEncoder() );
                         pipeline.addLast( new TxStreamFinishedResponseEncoder() );
                         pipeline.addLast( new FileHeaderEncoder() );
-                        pipeline.addLast( new LockResponseEncoder() );
 
                         pipeline.addLast( new ServerMessageTypeHandler( protocol, logProvider ) );
 
@@ -135,8 +132,6 @@ protected void initChannel( SocketChannel ch ) throws Exception
                         pipeline.addLast( new GetStoreRequestHandler( protocol, dataSourceSupplier,
                                 checkPointerSupplier ) );
 
-                        pipeline.addLast( new LockRequestDecoder( protocol ) );
-
                         pipeline.addLast( new ExceptionLoggingHandler( log ) );
                     }
                 } );

enterprise/core-edge/src/main/java/org/neo4j/coreedge/catchup/storecopy/edge/EdgeToCoreClient.java

@@ -24,22 +24,21 @@
 import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
 import io.netty.handler.codec.LengthFieldPrepender;
 
+import org.neo4j.coreedge.catchup.CatchupClientProtocol;
+import org.neo4j.coreedge.catchup.ClientMessageTypeHandler;
 import org.neo4j.coreedge.catchup.RequestMessageTypeEncoder;
 import org.neo4j.coreedge.catchup.ResponseMessageTypeEncoder;
+import org.neo4j.coreedge.catchup.storecopy.FileContentHandler;
 import org.neo4j.coreedge.catchup.storecopy.FileHeaderDecoder;
-import org.neo4j.coreedge.raft.locks.LockRequestEncoder;
-import org.neo4j.coreedge.catchup.CatchupClientProtocol;
+import org.neo4j.coreedge.catchup.storecopy.FileHeaderHandler;
+import org.neo4j.coreedge.catchup.tx.edge.TxPullRequestEncoder;
+import org.neo4j.coreedge.catchup.tx.edge.TxPullResponseDecoder;
 import org.neo4j.coreedge.catchup.tx.edge.TxPullResponseHandler;
 import org.neo4j.coreedge.catchup.tx.edge.TxStreamFinishedResponseDecoder;
 import org.neo4j.coreedge.catchup.tx.edge.TxStreamFinishedResponseHandler;
-import org.neo4j.coreedge.catchup.ClientMessageTypeHandler;
-import org.neo4j.coreedge.server.logging.ExceptionLoggingHandler;
 import org.neo4j.coreedge.server.Expiration;
-import org.neo4j.coreedge.catchup.tx.edge.TxPullRequestEncoder;
-import org.neo4j.coreedge.catchup.tx.edge.TxPullResponseDecoder;
 import org.neo4j.coreedge.server.ExpiryScheduler;
-import org.neo4j.coreedge.catchup.storecopy.FileContentHandler;
-import org.neo4j.coreedge.catchup.storecopy.FileHeaderHandler;
+import org.neo4j.coreedge.server.logging.ExceptionLoggingHandler;
 import org.neo4j.logging.LogProvider;
 
 public class EdgeToCoreClient extends CoreClient
@@ -75,7 +74,6 @@ protected void initChannel( SocketChannel ch ) throws Exception
 
             pipeline.addLast( new TxPullRequestEncoder() );
             pipeline.addLast( new GetStoreRequestEncoder() );
-            pipeline.addLast( new LockRequestEncoder() );
             pipeline.addLast( new ResponseMessageTypeEncoder() );
             pipeline.addLast( new RequestMessageTypeEncoder() );
 

enterprise/core-edge/src/main/java/org/neo4j/coreedge/raft/locks/NewLeaderBarrier.java → enterprise/core-edge/src/main/java/org/neo4j/coreedge/raft/NewLeaderBarrier.java

@@ -17,7 +17,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-package org.neo4j.coreedge.raft.locks;
+package org.neo4j.coreedge.raft;
 
 import org.neo4j.coreedge.raft.replication.ReplicatedContent;
 

enterprise/core-edge/src/main/java/org/neo4j/coreedge/raft/RaftInstance.java

@@ -20,7 +20,6 @@
 package org.neo4j.coreedge.raft;
 
 import java.io.Serializable;
-import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.locks.LockSupport;
 
@@ -39,7 +38,6 @@
 import org.neo4j.coreedge.raft.state.TermStore;
 import org.neo4j.coreedge.raft.state.VoteStore;
 import org.neo4j.coreedge.server.core.RaftStorageExceptionHandler;
-import org.neo4j.kernel.impl.util.Listener;
 import org.neo4j.logging.Log;
 import org.neo4j.logging.LogProvider;