[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: 42903556 -s ours am: edf58bcb -s ours am: 83756d42 -s ours am: a9a0af5c -s ours am: 966d360b -s ours

am skip reason: skipped by user schfan

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

Change-Id: I643a81eb10b9797349fb540fa893e2f87b533f2b