Revert "Zygote: Load system server code early"

This reverts commit 76b4b2c3661dd4fd76f96bb82b20022d99b2dbd0.

Bug: 128688902
Bug: 150032912
Test: boots
Change-Id: I0ae248ac2a3fe4002466cae33b231234ddaa69f2
2 files changed