Fix call to API in airnow option flow tests

[emontnemery]

Proposed change

Fix call to API in airnow option flow tests

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[home-assistant]

Hey there @asymworks, mind taking a look at this pull request as it has been labeled with an integration (airnow) you are listed as a code owner for? Thanks!

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[MartinHjelmare]

The setup_airnow fixture is weird. It uses async_setup_component without any config entry and there's no async_setup or YAML config for this integration.

[emontnemery]

The setup_airnow fixture is weird. It uses async_setup_component without any config entry and there's no async_setup or YAML config for this integration.

Agreed, but let's fix that in another PR.