drm: Remove 2 unused defines

These were introduced in the very first DRM commit:

  commit f453ba0460742ad027ae0c4c7d61e62817b3e7ef
  Author: Dave Airlie <airlied@redhat.com>
  Date:   Fri Nov 7 14:05:41 2008 -0800

      DRM: add mode setting support

      Add mode setting support to the DRM layer.

But are unused.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 014e491c..0a9f73e 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -494,8 +494,6 @@
 	void (*destroy)(struct drm_encoder *encoder);
 };
 
-#define DRM_CONNECTOR_MAX_UMODES 16
-#define DRM_CONNECTOR_LEN 32
 #define DRM_CONNECTOR_MAX_ENCODER 3
 
 /**