Resolve problem with robot destructive analyzer

CallTechName() was borrowed from destructive_analyzer.dm for reuse in
the portable analyzer.

Resolves #12356

code/_helpers/lists.dm

@@ -30,13 +30,6 @@
 
 		return "[output][and_text][input[index]]"
 
-
-/proc/ConvertReqString2List(var/list/source_list)
-	var/list/temp_list = params2list(source_list)
-	for(var/O in temp_list)
-		temp_list[O] = text2num(temp_list[O])
-	return temp_list
-
 //Returns list element or null. Should prevent "index out of bounds" error.
 proc/listgetindex(var/list/list,index)
 	if(istype(list) && list.len)