RFR: 1402: Cleanup some commands

[Erik Joelsson]

On Wed, 20 Apr 2022 13:24:09 GMT, Guoxiong Li <gli at openjdk.org> wrote:

> Hi all,
> 
> During the review of SKARA-1096 [1][2], I find the `AllowCommand` and `RejectCommand` are never used.
> And the `OpenCommand` and `CleanCommand` have many unused import statements.
> It is good to remove/cleanup them.
> 
> Thanks for taking the time to review.
> 
> Best Regards,
> -- Guoxiong
> 
> [1] https://bugs.openjdk.java.net/browse/SKARA-1096
> [2] https://github.com/openjdk/skara/pull/1297

Marked as reviewed by erikj (Lead).

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PR: https://git.openjdk.java.net/skara/pull/1301