remove unused file, add inventory conditional

tasks/main.yaml

@@ -14,6 +14,7 @@
 
 # Create new inventory file
 - name: create inventory file
+  when: create_inventory | bool
   block:
   - name: get bridge IP
     shell: ip -o -4 ad li | grep {{ bridge_name }} | awk '{print $4}' | cut -d '/' -f 1