Revert "Use instrumentation arg to prevent unnecessary delays in unit tests"

This reverts commit b5d08b246e875efdb3d8405501f481a6cc12b9f6.

Reason for revert: A similar G3 CL was reverted: cl/582384131

Change-Id: If3e3d6f1aacd297ef357d6330ca3e98e857ea71d
1 file changed