[release-branch.go1.10] doc: remove draft notice from Go 1.10 release notes
[release-branch.go1.10] doc: remove draft notice from Go 1.10 release notes

Change-Id: I063b556b59ecb8a8f4a3f121c32982b90eee2d74
Reviewed-on: https://go-review.googlesource.com/94159
Reviewed-by: Andrew Bonventre <682ad9f487f614f19e8b7cc5d340bdc8e1c1b128@golang.org>
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
(cherry picked from commit 229a8ce639f6c729700ad19321705b654890b502)
Reviewed-on: https://go-review.googlesource.com/94455

christopher-henderson/Go