GH-5581 LMDB: remove unneeded volatile keywords

Author: Ostrzyciel

core/sail/lmdb/src/main/java/org/eclipse/rdf4j/sail/lmdb/model/LmdbBNode.java

@@ -27,11 +27,11 @@ public class LmdbBNode extends SimpleBNode implements LmdbResource {
 	 * Variables *
 	 *-----------*/
 
-	private volatile ValueStoreRevision revision;
+	private ValueStoreRevision revision;
 
-	private volatile long internalID;
+	private long internalID;
 
-	private volatile boolean initialized = false;
+	private boolean initialized = false;
 
 	/*--------------*
 	 * Constructors *

core/sail/lmdb/src/main/java/org/eclipse/rdf4j/sail/lmdb/model/LmdbIRI.java

@@ -29,11 +29,11 @@ public class LmdbIRI implements LmdbResource, IRI {
 	 * Constants *
 	 *-----------*/
 
-	private volatile ValueStoreRevision revision;
+	private ValueStoreRevision revision;
 
-	private volatile long internalID;
+	private long internalID;
 
-	private volatile boolean initialized = false;
+	private boolean initialized = false;
 	/**
 	 * The IRI string.
 	 */

core/sail/lmdb/src/main/java/org/eclipse/rdf4j/sail/lmdb/model/LmdbLiteral.java

@@ -50,11 +50,11 @@ public class LmdbLiteral extends AbstractLiteral implements LmdbValue {
 	 */
 	private CoreDatatype coreDatatype;
 
-	private volatile ValueStoreRevision revision;
+	private ValueStoreRevision revision;
 
-	private volatile long internalID;
+	private long internalID;
 
-	private volatile boolean initialized = false;
+	private boolean initialized = false;
 
 	/*--------------*
 	 * Constructors *