Revert "Add "Unlocked device required" parameter to keys"

This reverts commit 5407bf1ece35ebc66c8c56e36a789b6fb89659d5.

Reason for revert: Build breakages on elfin, gce_x86_phone.

Bug: 72679761
Bug: 67752510
Change-Id: I1a4f8f725fe3aa7195f266ed77bbb7f4cccaa662
7 files changed