Remove unfinished OpenGL display list code

It seems unlikely anyone is going to do anything with this aside from stub
it out in OpenGLES ports.

code/renderergl1/tr_surface.c

@@ -1218,12 +1218,6 @@ static void RB_SurfaceFlare(srfFlare_t *surf)
 		RB_AddFlare(surf, tess.fogNum, surf->origin, surf->color, surf->normal);
 }
 
-static void RB_SurfaceDisplayList( srfDisplayList_t *surf ) {
-	// all apropriate state must be set in RB_BeginSurface
-	// this isn't implemented yet...
-	qglCallList( surf->listNum );
-}
-
 static void RB_SurfaceSkip( void *surf ) {
 }
 
@@ -1239,6 +1233,5 @@ void (*rb_surfaceTable[SF_NUM_SURFACE_TYPES])( void *) = {
 	(void(*)(void*))RB_MDRSurfaceAnim,		// SF_MDR,
 	(void(*)(void*))RB_IQMSurfaceAnim,		// SF_IQM,
 	(void(*)(void*))RB_SurfaceFlare,		// SF_FLARE,
-	(void(*)(void*))RB_SurfaceEntity,		// SF_ENTITY
-	(void(*)(void*))RB_SurfaceDisplayList		// SF_DISPLAY_LIST
+	(void(*)(void*))RB_SurfaceEntity		// SF_ENTITY
 };