project.config: lock down release-branch.go1.23

This locks down the Go 1.23 release branch to behave like the other
release branches, as per the release process.

Change-Id: Ia02837cb6c4b29d1ba7d8a14b1f779367aa3f049
Reviewed-on: https://go-review.googlesource.com/c/All-Projects/+/603937
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

project.config

diff --git a/project.config b/project.config
index bea5358..34845ee 100644
--- a/project.config
+++ b/project.config
@@ -83,9 +83,6 @@
 	submit = group mdb/golang-release-eng-policy
 	label-Auto-Submit = +0..+1 group gobot
 	label-Auto-Submit = +0..+1 group mdb/golang-release-eng-policy
-[access "refs/heads/release-branch.go1.23"]
-	submit = group cria/project-golang-approvers
-	label-Auto-Submit = +0..+1 group cria/project-golang-approvers
 [label "Code-Review"]
 	function = NoBlock
 	defaultValue = 0
@@ -234,3 +231,4 @@
 	description = Changes with a Signed-off-by footer are not submittable. See https://go.dev/wiki/CommitMessage.
 	applicableIf = hasfooter:Signed-off-by
 	submittableIf = is:false
+	canOverrideInChildProjects = false