Allow removing an embed in Message.edit

discord/http.py

@@ -318,18 +318,10 @@ class HTTPClient:
 
         return self.request(r, json=payload)
 
-    def edit_message(self, message_id, channel_id, content, *, embed=None):
+    def edit_message(self, message_id, channel_id, **fields):
         r = Route('PATCH', '/channels/{channel_id}/messages/{message_id}', channel_id=channel_id,
                                                                            message_id=message_id)
-        payload = {}
-
-        if content:
-            payload['content'] = content
-
-        if embed:
-            payload['embed'] = embed
-
-        return self.request(r, json=payload)
+        return self.request(r, json=fields)
 
     def add_reaction(self, message_id, channel_id, emoji):
         r = Route('PUT', '/channels/{channel_id}/messages/{message_id}/reactions/{emoji}/@me',

discord/message.py

@@ -416,7 +416,7 @@ class Message:
         yield from self._state.http.delete_message(self.channel.id, self.id)
 
     @asyncio.coroutine
-    def edit(self, *, content: str = None, embed: Embed = None):
+    def edit(self, **fields):
         """|coro|
 
         Edits the message.
@@ -427,8 +427,9 @@ class Message:
         -----------
         content: str
             The new content to replace the message with.
-        embed: :class:`Embed`
+        embed: Optional[:class:`Embed`]
             The new embed to replace the original with.
+            Could be ``None`` to remove the embed.
 
         Raises
         -------
@@ -436,9 +437,23 @@ class Message:
             Editing the message failed.
         """
 
-        content = str(content) if content else None
-        embed = embed.to_dict() if embed else None
-        data = yield from self._state.http.edit_message(self.id, self.channel.id, content, embed=embed)
+        try:
+            content = fields['content']
+        except KeyError:
+            pass
+        else:
+            if content is not None:
+                fields['content'] = str(content)
+
+        try:
+            embed = fields['embed']
+        except KeyError:
+            pass
+        else:
+            if embed is not None:
+                fields['embed'] = embed.to_dict()
+
+        data = yield from self._state.http.edit_message(self.id, self.channel.id, **fields)
         self._update(channel=self.channel, data=data)
 
     @asyncio.coroutine