fix to preserve player fatherinity in broodmothers on hold

src/pregmod/widgets/seBirthWidgets.tw

@@ -943,7 +943,6 @@ All in all,
 		<<set $slaves[$i].broodmotherCountDown = 38 - WombMinPreg($slaves[$i]) >> /*age of most new (small) fetus used to correct guessing of remained time.*/
 		<<set $slaves[$i].preg = 0.1>>
 		<<set $slaves[$i].pregType = 0>>
-		<<set $slaves[$i].pregSource = 0>>
 	<</if>>
 <<elseif $slaves[$i].womb.length > 0>>/* Not broodmother, but still has babies, partial birth case.*/
 	<<set $slaves[$i].preg = WombMaxPreg($slaves[$i])>> /*now we use most advanced remained fetus as base.*/