Revert "Disallow UDS-rooted BCC"

This reverts commit 7e6a933d.

Reason for revert: We now truncate the received BCC in pvmfw, so this restriction is not needed.
Bug: 266172411

Change-Id: I1c294862352a93c74153627ac9a6812e80e90da7
Merged-In: I1c294862352a93c74153627ac9a6812e80e90da7