reader: Step #1 of simplified Syncbase API transition

MultiPart: 6/7

Change-Id: I7c230c3513abb428de8aa3ea1c642275beee1a72
diff --git a/common/vdl/file.vdl b/common/vdl/file.vdl
index 28ba384..6ed8a64 100644
--- a/common/vdl/file.vdl
+++ b/common/vdl/file.vdl
@@ -5,12 +5,12 @@
 package reader
 
 import (
-  "v.io/v23/services/syncbase/nosql"
+  "v.io/v23/services/syncbase"
 )
 
 type File struct {
   Id string
-  Ref nosql.BlobRef
+  Ref syncbase.BlobRef
   Title string
   Size int64
   Type string