Revert "Skip dex-preopting prebuilts to save system image space"

This reverts commit 23dad4257e5ed59550828925f770a5efaf43ef8b.
Revert "Enable pre-dexopt on userdebug to speed up first boot"

This reverts commit 0a0b6ef488e90c7dd4b78a2ede5c9d19bc971feb.
Revert "Enable lazy dexopt"

This reverts commit ee87db23231554e2587c4b400de0b723d6a650c9.