Don't document that outbound portal avatars are supported

Also comment-out its unused code

ROADMAP.md

@@ -27,7 +27,7 @@
   * [ ] Room metadata changes
     * [x] Name<sup>[1]</sup>
     * [x] Topic<sup>[1]</sup>
-    * [x] Avatar<sup>[1]</sup>
+    * [ ] Avatar
     * [ ] Per-room user nick
 * KakaoTalk → Matrix
   * [ ] Message content

matrix_appservice_kakaotalk/kt/client/client.py

@@ -498,6 +498,7 @@ class Client:
             description=description,
         )
 
+    """ TODO
     def set_channel_photo(
         self,
         channel_props: ChannelProps,
@@ -508,6 +509,7 @@ class Client:
             channel_props=channel_props.serialize(),
             photo_url=photo_url,
         )
+    """
 
     def create_direct_chat(self, ktid: Long) -> Awaitable[Long]:
         return self._api_user_request_result(

node/src/client.js

@@ -1119,12 +1119,12 @@ export default class PeerClient {
 		return await talkChannel.setNoticeMeta(req.description)
 	}
 
-	/**
+	/*
+	 * TODO
 	 * @param {Object} req
 	 * @param {string} req.mxid
 	 * @param {ChannelProps} req.channel_props
 	 * @param {string} req.photo_url
-	 */
 	setChannelPhoto = async (req) => {
 		const talkChannel = await this.#getUserChannel(
 			req.mxid,
@@ -1137,6 +1137,7 @@ export default class PeerClient {
 			fullImageUrl: req.photo_url,
 		})
 	}
+	*/
 
 	/**
 	 * @param {Object} req
@@ -1284,7 +1285,7 @@ export default class PeerClient {
 				send_perm: this.sendPerm,
 				set_channel_name: this.setChannelName,
 				set_channel_description: this.setChannelDescription,
-				set_channel_photo: this.setChannelPhoto,
+				//set_channel_photo: this.setChannelPhoto,
 				create_direct_chat: this.createDirectChat,
 				leave_channel: this.leaveChannel,
 			}[req.command] || this.handleUnknownCommand