Merge "Remove new task flag when launching unicorn enrollment." into sc-dev...

Merge "Remove new task flag when launching unicorn enrollment." into sc-dev am: afe9dad1 am: dfb01e07

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15521773

Change-Id: Ic060991c337b3e287a40f1e397bcca844c99e483