fix: tear down default surplus wifi-iface(s)

Fixes: issue #5

roles/netconfig/tasks/main.yml

@@ -29,6 +29,15 @@
     key: network
   notify: restart network
 
+- name: Tear down the default wifi-iface(s)
+  uci:
+    config: wireless
+    command: absent
+    section: "{{ item }}"
+  loop:
+    - default_radio0
+    - default_radio1
+
 - name: Setup wireless devices (radios)
   uci:
     command: section