Revert "ART: Forbid the zygote to load code outside of system"

This reverts commit 9ef308da0ea8d1df2edf65d4957599fafcc56aeb.

Bug: 150032912
Bug: 129454856
Test: boots
Change-Id: I522b1e0e2b9116239ca206aa5c65347976eac7ab
4 files changed