This change removes the widget education tip dialog, and the arrow
tip view. These are no longer needed now that taps are handled by
showing an add button.
Bug: 335318980
Test: `pm clear com.google.android.apps.nexuslauncher` and open widget
picker
Flag: ACONFIG com.android.launcher3.enable_widget_tap_to_add NEXTFOOD
Change-Id: I9b24a41604880f5f94939c02b94f1a9f6a6c83d5
Willie Koomson
d731ba2ff1