Fold the leftover formatters into the SI ones and stop reallocating the draw scratch

render.go

@@ -71,25 +71,6 @@ func commas(v uint64) string {
 	return strings.Join(append([]string{s}, parts...), ",")
 }
 
-func commasInt(v int64) string {
-	if v < 0 {
-		return "-" + commas(uint64(-v))
-	}
-	return commas(uint64(v))
-}
-
-func humanBytes(b uint64) string {
-	const unit = 1000.0
-	v := float64(b)
-	for _, suffix := range []string{"B", "kB", "MB", "GB", "TB"} {
-		if v < unit {
-			return fmt.Sprintf("%.1f %s", v, suffix)
-		}
-		v /= unit
-	}
-	return fmt.Sprintf("%.1f PB", v)
-}
-
 // The magnitude letter goes with the figure so the unit can stay a fixed word
 // on the label. Below a thousand no letter is left dangling, since a trailing
 // space would push the figure off centre.