Prune the code for flattened APEX

With 27085041afdac79dcf643e80f80c0d9a57bd00b1, apexd does nothing for
flattened APEX; it exits itself immediately. This change removes the
obsolete code for handling flattened APEX.

Bug: 133493958
Test: presubmit pass
Change-Id: Ie0ef18de65caf42f5d2f755704671e2f526a4ccb
6 files changed
tree: 0a0c834691e5d064ccd048c0a6e15954e5f353dd
  1. apexd/
  2. apexer/
  3. docs/
  4. proto/
  5. shim/
  6. tests/
  7. CleanSpec.mk
  8. OWNERS
  9. PREUPLOAD.cfg