Simplify bot shutdown cogs removing

Unloading extensions already remove all cogs that is inside it and this is enough good for this case,
because bot still call dpy's internal function later to remove cogs not related with extensions (when exist).

1 files changed, 3 insertions, 9 deletions

diff --git a/bot/bot.py b/bot/bot.py
index 7a8f9932c..5e05d1596 100644
--- a/bot/bot.py
+++ b/bot/bot.py
@@ -93,16 +93,10 @@ class Bot(commands.Bot):
         super().clear()
 
     def _remove_extensions(self) -> None:
-        """Remove all extensions and Cog to close bot. Copyright (c) 2015-2020 Rapptz (discord.py, MIT License)."""
-        for extension in tuple(self.extensions):
+        """Remove all extensions to trigger cog unloads."""
+        for ext in self.extensions.keys():
             try:
-                self.unload_extension(extension)
-            except Exception:
-                pass
-
-        for cog in tuple(self.cogs):
-            try:
-                self.remove_cog(cog)
+                self.unload_extension(ext)
             except Exception:
                 pass