[automerger skipped] Revert "Revert "[pm] remove old stage dirs on low...

[automerger skipped] Revert "Revert "[pm] remove old stage dirs on low storage"" am: bd25f706 -s ours am: 40ef8ac0 -s ours am: db7163c1 -s ours am: 3de41d66 -s ours am: e72229a3 -s ours am: 0e12d843 -s ours am: 6184a9bf -s ours am: bef7c4f0 -s ours

am skip reason: skipped by user schfan

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16058207

Change-Id: Idf95fdf91cd17f6ee88e465f5a8dcb0dedde09b9