po: remove zanata config since translation was moved to weblate

Related: https://pagure.io/freeipa/issue/8159
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>

zanata.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<config xmlns="http://zanata.org/namespace/config/">
-  <url>https://fedora.zanata.org/</url>
-  <project>freeipa</project>
-  <project-version>master</project-version>
-  <project-type>gettext</project-type>
-  <src-dir>.</src-dir>
-  <trans-dir>.</trans-dir>
-  <excludes>ipatests/test_ipalib/data/ipa.pot</excludes>
-  <rules/>
-</config>