Remove App::Config::local_app_name and App::Config::local_app_version

[nirinchev]

Those are unused and the server doesn't seem to know about them either. We should remove them in Core and deprecate them in SDKs.

Relevant slack thread: https://mongodb.slack.com/archives/C010R3CMP3N/p1689848146390919

[kraenhansen]

I vaguely remember seeing these propagate to the cloud UI. I imagine it's useful for developers to debug sync errors, related to schema mismatches between versions of their app.

[nirinchev]

Based on the slack conversation it seems the app name is not parsed at all. The app version is parsed and appears in the logs, I don't believe it's visualized anywhere, but we've asked the cloud team to confirm what we're supposed to do with them.

I've noted that in the PR: #6816 (comment)