drm/i915/display: remove unnecessary i915_debugfs.h includes

Leftovers from before display debugfs was separated to its own file.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230411131922.401602-1-jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_dp.c

@@ -44,7 +44,6 @@
 #include <drm/drm_probe_helper.h>
 
 #include "g4x_dp.h"
-#include "i915_debugfs.h"
 #include "i915_drv.h"
 #include "i915_reg.h"
 #include "intel_atomic.h"

drivers/gpu/drm/i915/display/intel_hdmi.c

@@ -40,7 +40,6 @@
 #include <drm/drm_edid.h>
 #include <drm/intel_lpe_audio.h>
 
-#include "i915_debugfs.h"
 #include "i915_drv.h"
 #include "i915_reg.h"
 #include "intel_atomic.h"