def remove_roles(serv, role):
session = Session()
r = session.query(Role).filter(Role.id == role.id
and Role.server_id == serv.id).first()
session.delete(r)
session.commit()
session.close()
def remove_channel(channel, server):
session = Session()
chan = session.query(Channel).filter(
Channel.id == channel.id and Channel.server_id == server.id).first()
session.delete(chan)
session.commit()
session.close()