## Is your feature request related to a problem?

We manage around 20 3rd party tools that our internal users can log into using G Suite (part of your enterprise / scale offering). When a user leaves, we need to disable their account. Currently we need to do this in G Suite and then any of the 3rd party tools where password login is still possible.

## Describe the solution you'd like

When a user leaves, we disable their account in G Suite and their account in PostHog becomes disabled too. Essentially, the ability to restrict specific users in PostHog to only be able to login via SSO (defaulting to this setting).

## Describe alternatives you've considered

Manually removing their account, and being the enemy of our IT manager.

## Additional context



#### *Thank you* for your feature request – we love each and every one!

posthog/api/test/test_signup.py
import datetime
import uuid
from typing import cast
from unittest import mock
from unittest.mock import ANY, patch
import pytest
import pytz
from constance.test import override_config
from django.core import mail
from django.urls.base import reverse
from django.utils import timezone
from rest_framework import status
from posthog.constants import AvailableFeature
from posthog.models import Dashboard, Organization, Team, User
from posthog.models.organization import OrganizationInvite, OrganizationMembership
from posthog.test.base import APIBaseTest
from posthog.utils import get_instance_realm
MOCK_GITLAB_SSO_RESPONSE = {
    "access_token": "123",
    "email": "testemail@posthog.com",
    "name": "John Doe",
}
class TestSignupAPI(APIBaseTest):
    @classmethod
    def setUpTestData(cls):