Revert "Create an abstraction for dexopt tasks"

This reverts commit 6221e67f136c5d766273029b0175f42de80eaaf3.

Bug: 193668901

Reason for revert: Still failing art_odrefresh_tests

Change-Id: Ia521b4e4b560004186fdd46d8291ebc51cc526ed
22 files changed