This reverts commit e5aee79e9c.
Given recent improvements to boot timing, and higher paralellization,
the lazy preloading of zygote resources makes boot time slightly slower
by ~100-250ms. Therefore, the change is being reverted until we can do
it properly and defer it to a later point in the boot process. This work
is being tracked by b/34810190
BEFORE
------
successive-online : 17290.0,17633.0,17329.0,17655.0,16802.0,16888.0,17645.0,17369.0,17572.0,16932.0,
successive-online_avg : 17311.5
successive-boot : 24834.0,25119.0,25122.0,25091.0,25617.0,25535.0,25047.0,27462.0,25088.0,25648.0,
successive-boot_avg : 25456.3
AFTER
-----
successive-online : 16973.0,16530.0,17015.0,17953.0,17367.0,17098.0,16887.0,17377.0,18039.0,16742.0,
successive-online_avg : 17198.1
successive-boot : 24921.0,25622.0,25781.0,25449.0,25128.0,24774.0,24554.0,25029.0,24544.0,25809.0,
successive-boot_avg : 25161.1
Test: Boot timings collected with tradefed harness.
Bug: 34810190
Change-Id: I9a6dd5ce31bda067e74fc088b057711fa4a7a0fb