Revert^2 "Add deleteAllKeys to IKeystoreMaintenance"

Revert submission 15536724-revert-15521094-vold-deleteAllKeys-GDJSMLXRVZ

Reason for revert: Underlying KM problem fixed
Reverted Changes:
I8e2621bef:Revert "Detect factory reset and deleteAllKeys"
I546b980bb:Revert "Add deleteAllKeys to IKeystoreMaintenance"...
I1ed68dd9e:Revert "Allow vold to deleteAllKeys in Keystore"

Bug: 187105270
Test: booted Cuttlefish twice
Merged-In: 46c703e6a639ff16ba6466a69eb58530ce424bbb
Change-Id: Ib9fcf54fdc611de42a7d40b9319577e2708e226f
3 files changed