Fixes #7253: Remove obsolete reference to queryset cache invalidation

Author: jeremystretch

docs/administration/replicating-netbox.md

@@ -71,14 +71,3 @@ To extract the saved archive into a new installation, run the following from the
 ```no-highlight
 tar -xf netbox_media.tar.gz
 ```
-
----
-
-## Cache Invalidation
-
-If you are migrating your instance of NetBox to a different machine, be sure to first invalidate the cache on the original instance by issuing the `invalidate all` management command (within the Python virtual environment):
-
-```no-highlight
-# source /opt/netbox/venv/bin/activate
-(venv) # python3 manage.py invalidate all
-```