RFR: 8057776 Misc cleanups of the attach code

[Jaroslav Bachorik]

Looks fine

-JB-

On 09/08/2014 02:23 PM, Staffan Larsen wrote:
> Please review this simple fix for some small issues in the attach code:
> - Removed unused imports
> - Removed unused fields
> - Update @since for startManagementAgent() and startLocalManagementAgent() since these were just backported to 1.8
> - Simplified a for-loop in a test
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8057776
> webrev: http://cr.openjdk.java.net/~sla/8057776/webrev.00/
>
> Thanks,
> /Staffan
>