Revert all Guild.chunk changes

This method should *not* return a list of members due to the way it is
used internally.

discord/guild.py

@@ -3375,7 +3375,7 @@ class Guild(Hashable):
 
         await self._state.http.edit_widget(self.id, payload=payload, reason=reason)
 
-    async def chunk(self, *, cache: bool = True) -> Optional[List[Member]]:
+    async def chunk(self, *, cache: bool = True) -> None:
         """|coro|
 
         Requests all members that belong to this guild. In order to use this,
@@ -3394,18 +3394,13 @@ class Guild(Hashable):
         -------
         ClientException
             The members intent is not enabled.
-
-        Returns
-        --------
-        Optional[List[:class:`Member`]]
-             Returns a list of all the members in the guild.
         """
 
         if not self._state._intents.members:
             raise ClientException('Intents.members must be enabled to use this.')
 
         if not self._state.is_guild_evicted(self):
-            return await self._state.chunk_guild(self, cache=cache)
+            await self._state.chunk_guild(self, cache=cache)
 
     async def query_members(
         self,

discord/state.py

@@ -1073,7 +1073,7 @@ class ConnectionState:
 
         if wait:
             return await request.wait()
-        return await request.get_future()
+        return request.get_future()
 
     async def _chunk_and_dispatch(self, guild, unavailable):
         try: