Default Work Browser and Phone app search results look
identical to the regular defaults. Supress the results
until we differentiate work results.
"Assist and voice input" duplicate is a parent-child
duplication and is removed, as well.
Bug: 36101902
Test: make RunSettingsRoboTests
Change-Id: I3bb75c199cd76e24de42548dd166c4bccd0c7f0a
4d9a1ae9a2