drm/i915: Remove dubious Valleyview PCI IDs

0x0155 is rather Ivy Bridge PCI-E Root Port.
0x0157 from the same commit ff049b6c ("drm/i915: bind driver to ValleyView chipsets")
is likely wrong too. Nowhere is it independetly confirmed or mentioned.

Signed-off-by: Alexei Podtelezhnikov <apodtele@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200428034752.3975-1-apodtele@gmail.com


Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>