Revert "Treble-ize tmpfs access"

This reverts commit dc804ad9278d1e1914ff925c3429ac9fc837611e.

Reason for revert:
This change is no longer necessary due to aosp/889855 which moves all
apps to a shared tmpfs type. It's simpler, and significantly less 
likely to cause build breakages in downstream trees.
Bug: 122854450

Change-Id: I612db7707c021939a30401c1d79241b00b1f5222
1 file changed