Remove verbose logging for /api/state endpoint

[april]

Let's remove this:

2020-02-05:13:13:43 DEBUG    [listener.py:140] awaiting_role age 0.34 max 2
2020-02-05:13:13:43 DEBUG    [listener.py:155] Call received to /api/state with id of 4527901392. Returning state awaiting_role and web_state {'id': '4527901392'}

It doesn't add much with debugging, and generates a lot of lines of debug logs. We could support -vv, but I guess for now I would say to simply comment it out.