Revert "WifiConfigStore: Limit integrity checks to single user devices"

This reverts commit 8e70909c098f29b008d062e0cb30f313d300542d.

Removing workaround. Proper fix in CL above.

Bug: 138482990
Test: N/A
Change-Id: Iaee7746a3afc0fd6e80daa77ce5034e660261e8b
5 files changed