remove superfluous m_tag_copy/m_tag_prepend, already covered by m_copym2() reported by Joerg Sonnenberger, ok henning@
remove superfluous m_tag_copy/m_tag_prepend, already covered by m_copym2()
reported by Joerg Sonnenberger, ok henning@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars