RFR: 8321729: Remove 'orb' field in RMIConnector

[Roger Riggs]

On Mon, 11 Dec 2023 12:50:38 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

> Tidyup change, looks like this field was not removed when IIOP was removed from RMIConnector.
> 
> The field is not required for interoperability: 
> with the field removed, I can still connect an older JMX client to a running app with the updated JDK.
> 
> Since the JDK9 change https://hg.openjdk.org/jdk9/jdk9/jdk/rev/09daaf1e4c53
> did not change serialVersionUID, this update does not either.
> 
> Tests continue to pass, e.g.
> javax/management (including remote which has RMI tests)
> jdk/com/sun/management

Tidy!

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Marked as reviewed by rriggs (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17055#pullrequestreview-1775335414