[j1elo]

The other top-level comment (https://news.ycombinator.com/item?id=37041492) linked superuser answer mentions a similar single line for uBlock Origin:

  accounts.google.com/gsi/$3p

Any substantial difference between the suggested two, and this one?

[joobus]

I worked these out a while ago. I think on some sites, an iframe will still show, but will be empty. My second rule and this one probably do the same thing.