Remove duplicate crashed plane skin from Treasure Hunt mission.

Already defined in decoration folder.

planet/Missions.ocf/TreasureHunt.ocs/AltMaterials.ocd/Scene.material

@@ -1,45 +1,3 @@
-material CrashedAirplane
-{
-	receive_shadows on
-	technique
-	{
-		pass
-		{
-			cull_hardware none
-			scene_blend alpha_blend
-			ambient 0.500000 0.500000 0.500000 1.000000
-			diffuse 0.800000 0.800000 0.800000 1.000000
-			specular 0.000000 0.000000 0.000000 1.000000 3.500000
-			emissive 0.000000 0.000000 0.000000 1.000000
-
-			texture_unit Overlay
-			{
-				texture CrashedPaint.png
-				tex_address_mode wrap
-				filtering trilinear
-				colour_op_ex modulate src_texture src_player_colour
-				// take alpha from texture only, ignore player alpha
-				alpha_op_ex source1 src_texture src_player_colour
-			}
-			texture_unit Plane
-			{
-				texture Crashedairplane.jpg
-				tex_address_mode wrap
-				filtering trilinear
-				colour_op_ex blend_current_alpha src_current src_texture
-				// Don't blend alpha, to make sure we have full intensity at the base/overlay border region
-				alpha_op_ex add src_current src_texture
-			}
-			texture_unit Light
-			{
-				// apply lighting
-				colour_op_ex modulate src_current src_diffuse
-				alpha_op_ex modulate src_current src_diffuse
-			}
-		}
-	}
-}
-
 material GoldenShovel
 {
 	receive_shadows on