[Hero 1] Fix delete not working due to missing key

project.godot

@@ -32,6 +32,8 @@ hero_1_place_wall=[ Object(InputEventKey,"resource_local_to_scene":false,"resour
  ]
 hero_1_confirm_wall=[ Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"button_mask":0,"position":Vector2( 0, 0 ),"global_position":Vector2( 0, 0 ),"factor":1.0,"button_index":1,"pressed":false,"doubleclick":false,"script":null)
  ]
+hero_1_remove_wall=[ Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"button_mask":0,"position":Vector2( 0, 0 ),"global_position":Vector2( 0, 0 ),"factor":1.0,"button_index":2,"pressed":false,"doubleclick":false,"script":null)
+ ]
 hero_2_switch_gravity=[ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":46,"unicode":0,"echo":false,"script":null)
  ]
 switch_hero=[ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":39,"unicode":0,"echo":false,"script":null)