Modify borda module to use util module.

deliberate/borda.scm

@@ -1,11 +1,7 @@
 (define-module (deliberate borda)
+  #:use-module (deliberate utils)
   #:export (borda-score))
 
-(define (const-list length value)
-  (if (= length 0)
-      '()
-      (cons value (const-list (- length 1) value))))
-
 (define (borda-score alternatives ranked)
   ;; Check whether all alternatives have been scored
   (if (nil? alternatives)