Remove bogus draw_order values due to a pre-3.0 initialization bug

Fixes godotengine/godot#25642.

2d/physics_platformer/enemy/Enemy.tscn

@@ -171,7 +171,6 @@ emitting = false
 lifetime = 0.5
 one_shot = true
 explosiveness = 0.86
-draw_order = 4
 process_material = SubResource( 8 )
 texture = ExtResource( 3 )
 

2d/physics_platformer/player/Player.tscn

@@ -226,7 +226,6 @@ lifetime = 0.3
 one_shot = true
 explosiveness = 1.0
 local_coords = false
-draw_order = 97
 process_material = SubResource( 4 )
 texture = ExtResource( 3 )
 

2d/platformer/coin/Coin.tscn

@@ -131,7 +131,6 @@ material = SubResource( 4 )
 emitting = false
 lifetime = 2.0
 explosiveness = 1.0
-draw_order = 65793
 process_material = SubResource( 6 )
 texture = ExtResource( 4 )
 

2d/platformer/enemy/Enemy.tscn

@@ -214,7 +214,6 @@ lifetime = 0.5
 one_shot = true
 speed_scale = 1.2
 explosiveness = 0.1
-draw_order = 215832976
 process_material = SubResource( 7 )
 texture = ExtResource( 3 )
 

mono/DodgeTheCreepsCS/Player.tscn

@@ -125,7 +125,6 @@ fixed_fps = 0
 fract_delta = true
 visibility_rect = Rect2( -100, -100, 200, 200 )
 local_coords = false
-draw_order = 0
 process_material = SubResource( 5 )
 texture = ExtResource( 2 )
 normal_map = null