Update remove PE from PE Nokia template

geant/gap_ansible/roles/ibgp_update/templates/nokia/remove_pe_from_pe.j2

@@ -2,12 +2,12 @@
   <configure xmlns="urn:nokia.com:sros:ns:yang:sr:conf">
     <router>
       <router-name>Base</router-name>
-        <bgp>
-            <neighbor xmlns="urn:nokia.com:sros:ns:yang:sr:conf" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nokia-attr="urn:nokia.com:sros:ns:yang:sr:attributes" alu:operation="delete">
+        <bgp xmlns="urn:nokia.com:sros:ns:yang:sr:conf" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nokia-attr="urn:nokia.com:sros:ns:yang:sr:attributes">
+            <neighbor alu:operation="delete">
               <ip-address>{{ subscription.router.router_lo_ipv4_address }}</ip-address>
               <group>iGEANT</group>
             </neighbor>
-            <neighbor xmlns="urn:nokia.com:sros:ns:yang:sr:conf" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nokia-attr="urn:nokia.com:sros:ns:yang:sr:attributes" alu:operation="delete">
+            <neighbor alu:operation="delete">
               <ip-address>{{ subscription.router.router_lo_ipv6_address }}</ip-address>
               <group>iGEANT6</group>
             </neighbor>