Drop obsolete information from README.translation

Related: rhbz#1989840

README.translations

@@ -1,41 +1 @@
-policycoreutils translations currently live in the following locations:
-
-- https://fedora.zanata.org/project/view/selinux
-  - contains translations for both stable (Red Hat Enterprise Linux) and master (Fedora) branches
-  - maintains large number of languages (several of which do not actually contain any translated strings)
-  - updated by community and partially by RH localization effort
-
-- selinux source repository (https://github.com/fedora-selinux/selinux)
-  - is kept up-to-date with fedora.zanata
-
-How to update source files on fedora.zanata:
-  $ git clone git@github.com:fedora-selinux/selinux.git
-  $ cd selinux
-
-  # generate new potfile
-  $ for p in policycoreutils python gui sandbox; do
-    cd $p/po
-    make $p.pot
-    cd -
-    done
-
-  # Push potfiles to zanata
-  $ zanata-cli push --push-type source
-
-How to pull new translations from zanata
-  $ git clone git@github.com:fedora-selinux/selinux.git
-  $ cd selinux
-  # Make sure "zanata.xml" file pointing to corresponding translations branch is present
-  # Optionally update source files on zanata
-  # Pull new translations from zanata
-  $ zanata-cli -e pull --pull-type trans
-
-How to update translations *-po.tgz files
-  $ mkdir zanata
-  $ cd zanata
-  $ zanata-cli -e pull --project-config ../zanata.xml  --pull-type both
-  $ for p in policycoreutils python gui sandbox; do
-    cd $p
-    tar -c -f ../../$p-po.tgz -z .
-    cd -
-    done
+See https://src.fedoraproject.org/rpms/setroubleshoot/blob/rawhide/f/README.translations