Remove unused raczlib constants
diff --git a/cmd/ractool/main.go b/cmd/ractool/main.go
index ae43e6b..20743ba 100644
--- a/cmd/ractool/main.go
+++ b/cmd/ractool/main.go
@@ -287,12 +287,12 @@
 }
 
 func encode(r io.Reader) error {
-	indexLocation := raczlib.IndexLocation(0)
+	indexLocation := rac.IndexLocation(0)
 	switch *indexlocationFlag {
 	case "start":
-		indexLocation = raczlib.IndexLocationAtStart
+		indexLocation = rac.IndexLocationAtStart
 	case "end":
-		indexLocation = raczlib.IndexLocationAtEnd
+		indexLocation = rac.IndexLocationAtEnd
 	default:
 		return errors.New("invalid -indexlocation")
 	}
diff --git a/lib/raczlib/raczlib.go b/lib/raczlib/raczlib.go
index d41b8df..8b23a4b 100644
--- a/lib/raczlib/raczlib.go
+++ b/lib/raczlib/raczlib.go
@@ -20,22 +20,3 @@
 // The RAC specification is at
 // https://github.com/google/wuffs/blob/master/doc/spec/rac-spec.md
 package raczlib
-
-import (
-	"github.com/google/wuffs/lib/rac"
-)
-
-const (
-	// MaxSize is the maximum RAC file size (in both CSpace and DSpace).
-	MaxSize = rac.MaxSize
-)
-
-// IndexLocation is whether the index is at the start or end of the RAC file.
-//
-// See the RAC specification for further discussion.
-type IndexLocation = rac.IndexLocation
-
-const (
-	IndexLocationAtEnd   = rac.IndexLocationAtEnd
-	IndexLocationAtStart = rac.IndexLocationAtStart
-)