diff --git a/restricted/types/utils.go b/restricted/types/utils.go
deleted file mode 100644
index f602f00..0000000
--- a/restricted/types/utils.go
+++ /dev/null
@@ -1,13 +0,0 @@
-package types
-
-import (
-	"math/big"
-)
-
-// BigMin returns the smaller of x or y.
-func BigMin(x, y *big.Int) *big.Int {
-	if x.Cmp(y) > 0 {
-		return y
-	}
-	return x
-}
\ No newline at end of file