Revert "More robust updating of "runnable" list."

This reverts commit 7529b207666881c747c2685e4279a4cea6e0a581.

Reason for revert: b/276599346

possibly slow down coverage build boot time 

Change-Id: I87dbf23f4ed9dbadaa947f01edbb92a4a01e3dca
3 files changed