Revert "Tempoarily allow priv-apps access to device identifiers"

This reverts commit 6e96da29.

Reason for revert: Play and MTP/PTP issues have been resolved,
restoring device identifier access restrictions for priv apps.

Bug: 117781266
Test: cts-tradefed run cts-dev -m CtsTelephony3TestCases
Change-Id: I7ab432cfa92b6da65137608fc9d435d8296ffb84