[automerger skipped] Revert "Revert "[pm] remove old stage dirs on low storage"" am: bd25f70623 -s ours am: 40ef8ac08d -s ours am: db7163c1e2 -s ours am: 3de41d665a -s ours am: e72229a3f5 -s ours am: 0e12d84375 -s ours

am skip reason: skipped by user schfan

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

Change-Id: I1fb5d9b1ca1bfd321c02ffc6a81f3ac1490b3820