create() and close() to not throw an IOException.

src/test/java/net/openhft/chronicle/map/ReplicationCheckingMap.java

@@ -22,7 +22,6 @@ import org.jetbrains.annotations.NotNull;
 import org.junit.Assert;
 
 import java.io.File;
-import java.io.IOException;
 import java.util.Collection;
 import java.util.Map;
 import java.util.Set;
@@ -268,7 +267,7 @@ public class ReplicationCheckingMap<K, V> implements ChronicleMap<K, V> {
     }
 
     @Override
-    public void close() throws IOException {
+    public void close() {
         map1.close();
         map2.close();
     }