Revert "Hold dex caches live in class table"

This reverts commit d6d49e56c2b7b11f474acb80cb02bb1fe9b7861e.

Bug: 29083330

(cherry picked from commit f102faf1bcbdb2149e3e7bf27b1819f621b7894b)

Change-Id: Id0c921bd6fe422159f8daa598dc8e7c9ed6eca47
12 files changed