public boolean remove_via_padstack(LibPadstack p_padstack){
  if (p_padstack == null)   return true;
  return via_padstacks.remove(p_padstack);
}

public boolean remove_via_padstack ( LibPadstack p_padstack ) { if ( p_padstack == null ) return true ; return via_padstacks . remove ( p_padstack ) ; }
removes p_padstack from the via padstack list . returns false , if p_padstack was not found in the list
