upgrade_pg.sh: Disable after-upgrade removal

Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/postgres/files/upgrade_pg.sh

@@ -43,4 +43,6 @@ su - postgres -c "pg_upgrade -b /opt/pgsql-${FROM_VERSION}/bin/ -B /usr/bin/ -d
 systemctl daemon-reload
 systemctl start postgresql.service
 su - postgres -c '/var/lib/postgres/analyze_new_cluster.sh'
-su - postgres -c '/var/lib/postgres/delete_old_cluster.sh'
+# We probably want to manually delete things for now in case this script misses
+# some stuff
+#su - postgres -c '/var/lib/postgres/delete_old_cluster.sh'