Prune unnecessary custom modules

[yoongbok-lee]

Summary

Prune any modules that we can directly refer back to the vanilla modules without any feature / optimization loss.

Problem Definition

Many modules could be cleaned out of the codebase since some of them are only included because we needed some modification in the genesis etc. This can be done through directly modifying the generated genesis, so we can just use the vanilla modules in those cases.

Proposal

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Alternatives

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Additional context

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