No real need to track ReloadManager.scenes

This was to be able to loop through an tear them down, but tear down is primarily about ending any file writing, and potentially cleaning up a window, which for the sake of reusing a window we don't want to do anyway.

manimlib/reload_manager.py

@@ -25,7 +25,6 @@ class ReloadManager:
     command in the IPython shell.
     """
 
-    scenes: list[Any] = []
     window = None
     is_reload = False
 
@@ -50,10 +49,6 @@ class ReloadManager:
             except KillEmbedded:
                 # Requested via the `exit_raise` IPython runline magic
                 # by means of our scene.reload() command
-                for scene in self.scenes:
-                    scene.tear_down()
-
-                self.scenes = []
                 self.note_reload()
             except KeyboardInterrupt:
                 break
@@ -83,9 +78,9 @@ class ReloadManager:
         scene_config.update(window=self.window)
 
         # Scenes
-        self.scenes = manimlib.extract_scene.main(scene_config, run_config)
-        if len(self.scenes) == 0:
+        scenes = manimlib.extract_scene.main(scene_config, run_config)
+        if len(scenes) == 0:
             print("No scenes found to run")
 
-        for scene in self.scenes:
+        for scene in scenes:
             scene.run()