Revert "folder_block_ops: Since the clean BlockCache is now read during BlockOps.Get(), only read from the dirty cache in advance of the Get()"
Revert "folder_block_ops: Since the clean BlockCache is now read during BlockOps.Get(), only read from the dirty cache in advance of the Get()"

This reverts commit 4f18549b2cd561887c09b766e8c860feb9f10c6e.

Presumaby the `fbo.checkDataVersion` check was causing this test to
fail.

keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs