Revert "[1/2] Speed up booting on multicore devices."

This reverts commit f800c5b4e43f1d5f3d6f7d44754adbba1a264d8d.

Conflicts:
	services/java/com/android/server/pm/PackageManagerService.java

Change-Id: I917040a1ea0cd072ced28417edb7ad3cbbf91714

Conflicts:
	services/java/com/android/server/pm/Installer.java