dev-release: Remove steps for sticky discussion topic

We haven't done this for the past several releases, so just remove
it from the process.

Change-Id: I990e558331f9a691fbb0c7cd2e577340ac0ac0da

Documentation/dev-release.txt

diff --git a/Documentation/dev-release.txt b/Documentation/dev-release.txt
index 5e07fc7..464d90b 100644
--- a/Documentation/dev-release.txt
+++ b/Documentation/dev-release.txt
@@ -338,16 +338,6 @@
 `openssl sha -sha256 bazel-bin/release.war` or an equivalent
 command.
 
-* Update the new discussion group announcement to be sticky
-** Go to: http://groups.google.com/group/repo-discuss/topics
-** Click on the announcement thread
-** Near the top right, click on actions
-** Under actions, click the "Display this top first" checkbox
-
-* Update the previous discussion group announcement to no longer be sticky
-** See above (unclick checkbox)
-
-
 [[increase-version]]
 === Increase Gerrit Version for Current Development