Remove a check that is not requied in config_sonic_basedon_testbed.ym…

…l based on review comment

ansible/config_sonic_basedon_testbed.yml

@@ -135,7 +135,6 @@
   - name: find all interface indexes mapping connecting to VM
     set_fact:
       interface_to_vms: "{{ interface_to_vms|default([]) + [ {'name': item.key, 'ports': item.value['interface_indexes'][dut_index|int] }] }}"
-    when: item.value|length
     with_dict: "{{ vm_topo_config['vm'] }}"
 
   - name: find all interface indexes connecting to VM