diff --git a/2018/day20/day20.go b/2018/day20/day20.go
index fafa156..a651db8 100644
--- a/2018/day20/day20.go
+++ b/2018/day20/day20.go
@@ -7,8 +7,6 @@ import (
 )
 
 const (
-	CLEAR_SCREEN = "\033[H\033[2J"
-
 	MAX_INT = int(^uint(0) >> 1)
 	MIN_INT = -MAX_INT - 1
 )
@@ -110,19 +108,6 @@ func (f *Facility) setRoom(r *Room) {
 	f.rooms[r.key()] = r
 }
 
-func (f *Facility) string() string {
-	var ret string
-	for y := f.minY; y < f.maxY; y++ {
-		for x := f.minX; x < f.maxX; x++ {
-			if r, ok := f.rooms[f.key(x, y)]; !ok {
-				ret += " " + r.key() + " "
-			}
-		}
-		ret += "\n"
-	}
-	return ret
-}
-
 type Room struct {
 	x, y int
 	dist int