diff --git a/jdk/src/jdk.attach/aix/classes/sun/tools/attach/AttachProviderImpl.java b/jdk/src/jdk.attach/aix/classes/sun/tools/attach/AttachProviderImpl.java
index 532c3db0a3d..56d76734da5 100644
--- a/jdk/src/jdk.attach/aix/classes/sun/tools/attach/AttachProviderImpl.java
+++ b/jdk/src/jdk.attach/aix/classes/sun/tools/attach/AttachProviderImpl.java
@@ -28,8 +28,6 @@ package sun.tools.attach;
 import com.sun.tools.attach.VirtualMachine;
 import com.sun.tools.attach.VirtualMachineDescriptor;
 import com.sun.tools.attach.AttachNotSupportedException;
-import com.sun.tools.attach.spi.AttachProvider;
-
 import java.io.IOException;
 
 // Based on linux/classes/sun/tools/attach/AttachProviderImpl.java.
@@ -40,9 +38,6 @@ import java.io.IOException;
  */
 public class AttachProviderImpl extends HotSpotAttachProvider {
 
-    // perf counter for the JVM version
-    private static final String JVM_VERSION = "java.property.java.vm.version";
-
     public AttachProviderImpl() {
     }
 
diff --git a/jdk/src/jdk.attach/aix/classes/sun/tools/attach/VirtualMachineImpl.java b/jdk/src/jdk.attach/aix/classes/sun/tools/attach/VirtualMachineImpl.java
index a76d0a99771..cf96c51e9a9 100644
--- a/jdk/src/jdk.attach/aix/classes/sun/tools/attach/VirtualMachineImpl.java
+++ b/jdk/src/jdk.attach/aix/classes/sun/tools/attach/VirtualMachineImpl.java
@@ -25,14 +25,12 @@
  */
 package sun.tools.attach;
 
-import com.sun.tools.attach.VirtualMachine;
 import com.sun.tools.attach.AgentLoadException;
 import com.sun.tools.attach.AttachNotSupportedException;
 import com.sun.tools.attach.spi.AttachProvider;
 import java.io.InputStream;
 import java.io.IOException;
 import java.io.File;
-import java.util.Properties;
 
 // Based on linux/classes/sun/tools/attach/VirtualMachineImpl.java.