sumdb/note: remove draft comment
sumdb/note: remove draft comment

Change-Id: Ie46caf623e8244a5b53ad5a51d1f3a8801d1711d
Reviewed-on: https://go-review.googlesource.com/c/mod/+/213120
Reviewed-by: Jay Conrod <f3fadaedc813344da5ec13b41e26596889cc5baa@google.com>

golang/mod,golang/mod