Revert "init: Fix a race condition in KillProcessGroup()"

This reverts commit 15e5ecdcd7ea69e63387346bd235fbeb3e3597df.

Reason for revert: breaks console support.
Bug: 213617178
Bug: 258754901
Change-Id: Iffe213e2cd295461a427621f2b84933f1bebd39f
4 files changed