Revert "f2fs: support f2fs by setting unmovable bit for package file"

 * Replaced with upstream aosp/master version
 * With this change flashing fails if either one of the following cases are met:
  1) Kernel f2fs stack doesn't support the ioctl ( errno isn't checked for ENOTSUP )
  2) If the device has multiple userdata entries in fstab ( f2fs and ext4 in this order )
     and userdata is formatted as ext4, recovery will attempt to send the ioctl
     without checking if it's supported ( same as 1, errno isn't checked for ENOTSUP )
  3) The ioctl, when supported, needs an extra argument ( __u32 set )

This reverts commit 848f227e.

Change-Id: I5871d3da4594f7da44546a2979e72dd87434f821