Revert "Add new GBM_BO_IMPORT_FD_PLANAR"

Revert "Add new GBM_BO_IMPORT_FD_PLANAR"

This reverts commit bb19d6abec19015eb16fe33d3a4128194f8c7f2f.

This was chumped w/out explanation, and the bots have all been
dead since due to graphics_Gbm check failures.  Reverting in
the hope it'll fix things.  It can reland via the CQ.

BUG=chromium:654245

Change-Id: I0d88f7731e9e90fffee1485056d787430eb0b850
Reviewed-on: https://chromium-review.googlesource.com/395727
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>