Revert "Hold dex caches live in class table"
am: f102faf1bc

* commit 'f102faf1bcbdb2149e3e7bf27b1819f621b7894b':
  Revert "Hold dex caches live in class table"

Change-Id: I55b360beb73a5314a934467b062e727aa0c4b55a