Revert "art: Add FileDescriptor fields to native Core Platform API"

Reason for revert: Fails 'atest PreloadCheck'
Reverted Changes:
Ifd25daed9:art: Add FileDescriptor fields to native Core Plat...
I7c65da755:libcore: Remove native calls in FileDescriptor <cl...

Change-Id: Ie9fa5a25d5352f214a16e10d5bbbe45da9f3c486
Exempt-From-Owner-Approval: revert

Bug: 150680645
Bug: 151107960
3 files changed