Use already existing JS function

src/uncategorized/walkPast.tw

@@ -3,7 +3,7 @@
 //
 <<set $target = "">>
 <<if $familyTesting == 1 && totalRelatives($activeSlave) > 0 && random(1,100) > 80>>
-    <<set $relation = getRandomRelation($activeSlave)>>
+    <<set $relation = randomRelatedSlave($activeSlave)>>
 	<<if $relation.mother == $activeSlave.ID || $relation.father == $activeSlave.ID>>
 		<<set $relationType = "daughter">>
 	<<elseif $activeSlave.mother == $relation.ID>>