util: remove dead code

util.go

@@ -1,9 +1,5 @@
 package main
 
-import (
-	"sort"
-)
-
 func search(hand []Card, wildFace int, search Card) []int {
 	ret := []int{}
 	for idx, c := range hand {
@@ -18,36 +14,8 @@ func search(hand []Card, wildFace int, search Card) []int {
 	return ret
 }
 
-// take takes a single card out of a hand by its index, returning the remaining cards.
-func take(hand []Card, index int) (Card, []Card) {
-	cc := hand[index]
-
-	rem := make([]Card, 0, len(hand)-1)
-	rem = append(rem, hand[0:index]...)
-	rem = append(rem, hand[index+1:]...)
-
-	return cc, rem
-}
-
-func forkPossibilities(in map[int]struct{}) map[int]struct{} {
-	ret := map[int]struct{}{}
-	for prev, _ := range in {
-		ret[prev] = struct{}{}
-	}
-	return ret
-}
-
 func forkHand(hand []Card) []Card {
 	ret := make([]Card, len(hand))
 	copy(ret, hand)
 	return ret
 }
-
-func flattenPossibility(in map[int]struct{}) []int {
-	flat := make([]int, 0, len(in))
-	for cidx, _ := range in {
-		flat = append(flat, cidx)
-	}
-	sort.Ints(flat)
-	return flat
-}