TBR: Fix my todo.

Change-Id: I7bec158b5c02ec387ae4f3d534d4c211d5b507e7
diff --git a/lib/discovery/global/encoding.go b/lib/discovery/global/encoding.go
index 48e516f..bb4ca5f 100644
--- a/lib/discovery/global/encoding.go
+++ b/lib/discovery/global/encoding.go
@@ -17,8 +17,7 @@
 // which we mount the advertisement.
 // The format of the generated suffix is id/interfaceName/timestamp/attributes.
 //
-// TODO(suharshs): Currently only the id and the attributes are encoded; we may
-// want to encode the rest of the advertisement someday?
+// TODO(suharshs): Currently Attachments are not encoded in global discovery.
 func encodeAdToSuffix(ad *discovery.Advertisement, timestampNs int64) (string, error) {
 	b, err := vom.Encode(ad.Attributes)
 	if err != nil {