Remove learn more link if not provisioned. DO NOT MERGE

Remove the learn more link during setup wizard, because HelpUtils is
returning null for the intent while the device is not provisioned.

CYNGNOS-3303
Bug: 31246856
Change-Id: I4cf5c282f170188aef98a02d3b96af5e63ea7f39
(cherry picked from commit c94f2b93)