deleteFriendsGroup(groupID, callback) {
		return StdLib.Promises.timeoutCallbackPromise(10000, null, callback, true, (resolve, reject) => {
			this._send(EMsg.AMClientDeleteFriendsGroup, {
				groupid: groupID
			}, (body) => {
				if (body.eresult != EResult.OK) {
					return reject(Helpers.eresultError(body.eresult));
				}

				delete this.myFriendGroups[groupID];

				return resolve();
			});
		});
	}
Deletes a friends group (or tag)
@param {int} groupID - The friends group id
@param {function} [callback]
@return {Promise}