Revert "Fix vulnerability in AttributionSource due to incorrect ..."

Revert submission 21778925-tm-dev-2-attribution-source

Reason for revert: b/272115855
Reverted changes: /q/submissionid:21778925-tm-dev-2-attribution-source

Bug: 272115855
Change-Id: Ia3d101bab6613da6515acc87af9295da664827cf
1 file changed