Revert "Fix the API for new flatbuffer"

Revert submission 1258647-flatbuffer

Reason for revert: It broke ab/androidx-master-dev
Reverted Changes:
Ia8bdf90e3:Fix the API for new flatbuffer

Exempt-From-Owner-Approval: Revert
Change-Id: If39cb1a6d1ae397f52b6dc9931b4e987c03c2a37
2 files changed