Revert "Skip intel_crt_init for Dell XPS 8700"

This reverts commit 10b6ee4a.

According to [1] Dell XPS8700 VBT says 'int_crt_support 0', so thanks
to commit e4abb733 ("drm/i915: Check VBT for CRT port presence on
HSW/BDW") we no longer need to blacklist it based on DMI.

Looking through the bug report, SFUSE_STRAP based detection was
apparently also tried and failed, but the VBT based one should still
work just fine.

The commit says that the symptom was a frozen machine, but based on the
bug report it doesn't look like the CRT detection was at least directly
responsible for such a drastic outcome.

Cc: Giacomo Comes <comes@naic.edu>
References: https://bugs.freedesktop.org/show_bug.cgi?id=73559
References: http://lists.freedesktop.org/archives/intel-gfx/2014-January/038178.html

 [1]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1474881646-1326-1-git-send-email-ville.syrjala@linux.intel.com


Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>