Hotfix/remove initial plus promo pings

[wlycdgr]

Removes the hub and panel initial plus promo pings (that would never be sent because the new user has not yet had a chance to opt in to non-essential data collection).

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• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
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• Did you lint your code prior to submission?

[christophertino]

@wlycdgr Please also remove these from the Metrics class

[wlycdgr]

@wlycdgr Please also remove these from the Metrics class

@christophertino Forgot about Metrics, my bad. Done.