More obsolete cleanup

[RReverser]

Description of Changes

Cleanup leftovers of the query macro & mark obsolete C# ABIs as such.

API and ABI breaking changes

If this is an API or ABI breaking change, please apply the
corresponding GitHub label.

Expected complexity level and risk

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where 1 is a trivial change, and 5 is a deep-reaching and complex change.

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but also to its interactions with existing and future code.

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Testing

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[cloutiertyler]

I am approve this. For context for future readers, we're marking this Obsolete but they actually don't work at all since #1777
because the underlying abi function have been removed. This will be resolved when these functions are removed entirely in #1707