Clean out nightly release notes after branching

Fixes: cf0c815 ("Update master for 3.14 branching")

guides/doc-Release_Notes/topics/foreman.adoc

@@ -10,29 +10,7 @@ There are no highlights with Foreman {ProjectVersion}.
 == Upgrade Warnings
 
 // If this section would be empty otherwise, uncomment the following line:
-//There are no upgrade warnings with Foreman {ProjectVersion}.
-ifndef::foreman-deb[]
-=== EL 7 client repositories dropped
-
-RHEL 7 is out of maintenance since June 2024 and at the same time CentOS Linux 7 went end of life.
-With Foreman 3.14, the client repository is no longer built for EL 7.
-This primarily affects Katello and OpenSCAP users.
-
-For more details, see the https://community.theforeman.org/t/drop-el7-packages-from-foreman-client-with-foreman-3-14/40505[removal RFC].
-
-endif::[]
-ifdef::foreman-deb[]
-=== Running Foreman on Debian 11 (Bullseye) is not supported anymore
-
-Foreman supports running on Debian 12 (Bullseye) since 3.11.4.
-Running Foreman on Debian 11 has been deprecated since 3.13.
-Support for running Foreman on Debian 11 has been removed.
-
-Note this is for running Foreman itself.
-Clients will remain supported.
-
-For more details, see the https://community.theforeman.org/t/drop-debian-11-ruby-2-7-and-nodejs-14-support-in-foreman-3-14/40503[removal RFC].
-endif::[]
+There are no upgrade warnings with Foreman {ProjectVersion}.
 
 [id="foreman-deprecations"]
 == Deprecations

guides/doc-Release_Notes/topics/katello.adoc

@@ -4,11 +4,7 @@
 [id="katello-headline-features"]
 == Headline Features
 
-=== postgresql-evr extension no longer required
-
-Installation of the Katello database on remote systems where root access is not available is now possible.
-Only a basic PostgreSQL installation is required.
-With this feature, you can now install on systems like Amazon RDS or Azure Database for PostgreSQL.
+There are no headline features with Katello {KatelloVersion}.
 
 [id="katello-upgrade-warnings"]
 == Upgrade Warnings