Revert "Auto-migrate matching accounts where no global account exists"

This reverts commit b2e553e104d568c09f20b11fd976106f7874c8f3.

Bug: 71223
Change-Id: I3a8ec44c66a8c4c1cd70574564ca21018456acf0
Merge "Revert "Auto-migrate matching accounts where no global account exists""