deleteChatRoom(groupId, chatId, callback) {
		return StdLib.Promises.timeoutCallbackPromise(10000, null, callback, true, (resolve, reject) => {
			this.user._sendUnified('ChatRoom.DeleteChatRoom#1', {
				chat_group_id: groupId,
				chat_id: chatId
			}, (body, hdr) => {
				let err = Helpers.eresultError(hdr.proto);
				if (err) {
					return reject(err);
				}

				resolve();
			});
		});
	}
Delete a text/voice chat room in a group (and all the messages it contains), provided you have permissions to do so.
@param {int|string} groupId - The ID of the group in which you want to delete a room
@param {int|string} chatId - The ID of the room you want to delete
@param {function} [callback]
@returns {Promise}