getConfig cleanup of device, app, and site in bidders

[patmmccann]

Prebid.js/modules/insticatorBidAdapter.js

Line 110 in 56292c4

const deviceConfig = config.getConfig('device');

is an example of referencing getConfig to gather a parameter about the device. The preferred implementation follows this

Prebid.js/modules/mgidBidAdapter.js

Line 201 in 56292c4

device: ortb2Data?.device || {},

There are many incorrect implementations in the project.

https://github.com/search?q=repo%3Aprebid%2FPrebid.js+%22getConfig%28%27device%27%29%22&type=code

https://github.com/search?q=repo%3Aprebid%2FPrebid.js+%22getConfig%28%27site%27%29%22&type=code

https://github.com/search?q=repo%3Aprebid%2FPrebid.js+%22getConfig%28%27app%27%29%22&type=code

We no longer support site, device, nor app config directly accessed in bidders [core picks it up and puts it in ortb2, but it isn't documented]

[patmmccann]

replaced by #10747