Disable opening expanded QS from the lockscreen on large screen devices

This change disables special pull-down gesture from the top left corner that would normally open expanded quick settings.
That gesture is not as relevant for large screen devices as collapsed QS is more functional already.
Also disabling it means that pull down would always trigger usual lockscreen to shade animation which works nicely already and doesn't require any special work.

Fixes: 190504112
Test: NotificationPanelViewControllerTest
Change-Id: I303c59b06ec28df1251baa0045612cc67a8b8454