How to remove /home?

By default in Grav, home page has two URLs:
In this situation, there is duplicate content (Google considers this to be a huge problem).

How can you delete /home?

I don’t know why the /home redirect in the “site” section of the admin plugin never works but I’ve done my own redirect with a simple line in the htaccess file:

RewriteEngine On
RedirectMatch 301 /home/? /