Revert "Enable CORE_DEFER_UNTIL_ACTIVE by default."

This reverts commit a2d4cfbaddc41110c208cfdcf0d0329e6e4aa880.

Reason for revert: TestMonitor: culprit for b/274520461

Change-Id: If4bd03963e7013c784f8f436fd9f7d9bb961a223
1 file changed