Revert^2 "Do not dexpreopt system server jars from updatable modules."

This reverts commit 01f6b0a6.

Reason for revert: Build failure is not reproducible.
Forrest build on the same build ID 6033773 and same target
cf_x86_phone-userdebug_coverage finished successfully.

Change-Id: I5077f8332aa0b8037e324b89d41f35b86b8cf216