Removing acking on channels.

discord/abc.py

@@ -777,25 +777,3 @@ class Messageable(metaclass=abc.ABCMeta):
                         counter += 1
         """
         return HistoryIterator(self, limit=limit, before=before, after=after, around=around, reverse=reverse)
-
-    @asyncio.coroutine
-    def ack(self):
-        """|coro|
-
-        Marks this channel as read.
-
-        The user must not be a bot user.
-
-        Raises
-        -------
-        HTTPException
-            Acking failed.
-        ClientException
-            You must not be a bot user.
-        """
-
-        state = self._state
-        if state.is_bot:
-            raise ClientException('Must not be a bot account to ack messages.')
-        channel = yield from self._get_channel()
-        yield from state.http.ack_channel(channel.id)

discord/http.py

@@ -326,12 +326,6 @@ class HTTPClient:
         data = yield from self.request(r, json={'token': self._ack_token})
         self._ack_token = data['token']
 
-    @asyncio.coroutine
-    def ack_channel(self, channel_id):
-        r = Route('POST', '/channels/{channel_id}/ack', channel_id=channel_id)
-        data = yield from self.request(r, json={'token': self._ack_token})
-        self._ack_token = data['token']
-
     def ack_guild(self, guild_id):
         return self.request(Route('POST', '/guilds/{guild_id}/ack', guild_id=guild_id))