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

This reverts commit 1eb3394e9c.

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

Change-Id: Iae54df241257e3a3dcad4e54fdbf9dd14e9814de

rootdir/init.rc

@@ -538,10 +538,6 @@ on late-init
     # /data, which in turn can only be loaded when system properties are present.
     trigger post-fs-data
 
-    # APEXes are ready to use. apex-ready is a public trigger similar to apexd.status=ready which
-    # is a system-private property.
-    trigger apex-ready
-
     # Should be before netd, but after apex, properties and logging is available.
     trigger load_bpf_programs
 
@@ -1306,7 +1302,6 @@ on userspace-reboot-fs-remount
 on userspace-reboot-resume
   trigger userspace-reboot-fs-remount
   trigger post-fs-data
-  trigger apex-ready
   trigger zygote-start
   trigger early-boot
   trigger boot