Unused members in JMemoryBuddy

[Nir Lisker]

Hi,

Looking at JMemoryBuddy, there are unused fields and methods. It's not
clear if they were left in by mistake or are part of future work.

* line 89: AssertCollectable assertCollectable = new
AssertCollectable(weakReference);
* line 237: the method setMxBeanProxyName
* line 309: setAsReferenced

The last one is part of the class SetAsReferenced, which is used in the
memoryTest method's  setAsReferenced, but the list it is added to is never
read from. Could be that it just holds references so that they won't be
collected.

Are these needed?

- Nir