Deprecate obsolete provisioning extras

EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_ICON_URI and
EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_LABEL are no longer used
in the provisioning flows.

Bug: 180010560
Test: compiled
Test: tested with ManagedProvisioning in the other CL
Change-Id: I7cba43d6ca80a12d1d3384b17797b77378edfff5
2 files changed