MINOR: Clean up TopicCommand

[wernerdv]

Changes in this PR:

• Cleared out obsolete boolean fields (always false) from classes.
• Revised method access modifiers for better encapsulation.
• Simplified code by inlining one‑time‑use methods.

Reviewers: Chia-Ping Tsai [email protected]

[wernerdv]

@AndrewJSchofield @apoorvmittal10 Hello, could you please take a look when you have a chance?

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[wernerdv]

@chia7712 gentle ping for review

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[wernerdv]

@chia7712 Please take a look at the small cleanup when you have a chance.

[github-actions]

A label of 'needs-attention' was automatically added to this PR in order to raise the
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[chia7712]

Nice cleanup. This was a zk-speicific deletion marker, so it is redundant now

[wernerdv]

Thanks for the review!