Remove deleted modules from doc build config

Author: pushfoo

util/update_quick_index.py

@@ -269,14 +269,6 @@
     "future.rst": {
         "title": "Future Features",
         "use_declarations_in": [
-            "arcade.future.texture_render_target",
-            "arcade.future.input.inputs",
-            "arcade.future.input.manager",
-            "arcade.future.input.input_mapping",
-            "arcade.future.input.raw_dicts",
-            "arcade.future.background.background_texture",
-            "arcade.future.background.background",
-            "arcade.future.background.groups",
             "arcade.future.light.lights",
             "arcade.future.video.video_player",
         ],