code: func (b *BigIP) DeletePoolMember(pool string, member string) error {
  	return b.delete(uriLtm, uriPool, pool, uriPoolMember, member)
  }
docs: // DeletePoolMember removes a member from the given pool. <member> must be in the form
  // of <node>:<port>, i.e.: "web-server1:443".