Revert "Fix assertion failure"

This reverts commit 8455fdc581a49b231728947ffa7d0a32e956850c.
Revert "ueventd: fix a busy loop while reading uevents"

This reverts commit 46d1762953cb23137b53f31d50df57c6e149fd33.
Revert "Add keystore to system group"

This reverts commit 3de9708380d45f934c11d17c8e243fca8d797e4f.