Merge deprecated functional tests with counterpart functional test

[abmusse]

We can skip tests programatically with:

https://mochajs.org/#inclusive-tests

With this we can move tests from tests/functional/deprecated folder into their respective test file in test/functional. Just need to add a describe block for the deprecated tests and test if idb or rest transport is being used used. If not we can just skip those deprecated tests.

Originally posted by @abmusse in #157

[abmusse]

To make this work we first need switch test cases from arrow functions. See #283

[github-actions]

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