drm/i915/bdw: Remove the HDMI/DVI entry from the DP/eDP/FDI tables

We always write entries 0 to 8 from the DDI translation tables and then
entry 9 for HDMI/DVI with the help of the VBT. We then don't need the
failsafe HDMI entry in the DP/eDP/FDI tables.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>