drop second repo for 16.0

Author: lkocman

xml/obs/openSUSE:Leap:16.0.xml

@@ -10,8 +10,5 @@
         </repos>
     </flavor>
     <flavor name="offline-installer" folder="../product/local/*/*offline-installer*" iso="1" media1="0">
-        <repos>
-            <oss name="Leap-16.0-aarch64-ppc64le-s390x-x86_64$" mirror="1"/>
-        </repos>
     </flavor>
 </openQA>