Revert "add apex-ready event after post-fs-data"

This reverts commit 1eb3394e9c9ea0d19abf195a60ccbe1c28dd8388.

Reason for revert: b/244406239, we've migrated to a sysprop(apex.all.ready) instead of an event.

Change-Id: Iae54df241257e3a3dcad4e54fdbf9dd14e9814de
1 file changed