## Is your feature request related to a problem?
See [this](https://github.com/PostHog/posthog/pull/9139/files/2754c0fd6633c806def5c328d491421ae7de0c19#diff-7f0217a57a02b6ebd709f6aa7bf43760b2d5a53069aee2b7fea27fdad1caadf1) for more info.


## Describe the solution you'd like

> This is used by django-rest-hooks, the library we use to integrate with Zapier. Specifically, this fires our Zapier integration's Triggers. However, the only trigger that actually matters is the "action_performed" one, and that has been completely delegated to the plugin server for a while. We can remove this Python cruft then, along with django-rest-hooks, but first we need to make sure action_defined and annotation_created actually are unused, and roll out an update to https://github.com/PostHog/posthog-zapier that'd remove those two completely.


## Describe alternatives you've considered

Do nothing
ee/settings.py
]
SOCIAL_AUTH_SAML_SP_ENTITY_ID = SITE_URL
SOCIAL_AUTH_SAML_SECURITY_CONFIG = {
    "wantAttributeStatement": False,  
    "requestedAuthnContext": False,  
}
SOCIAL_AUTH_SAML_SP_PUBLIC_CERT = ""
SOCIAL_AUTH_SAML_SP_PRIVATE_KEY = ""
SOCIAL_AUTH_SAML_ORG_INFO = {"en-US": {"name": "posthog", "displayname": "PostHog", "url": "https://posthog.com"}}
SOCIAL_AUTH_SAML_TECHNICAL_CONTACT = {"givenName": "PostHog Support", "emailAddress": "hey@posthog.com"}
SOCIAL_AUTH_SAML_SUPPORT_CONTACT = SOCIAL_AUTH_SAML_TECHNICAL_CONTACT
SOCIAL_AUTH_GOOGLE_OAUTH2_KEY = os.getenv("SOCIAL_AUTH_GOOGLE_OAUTH2_KEY")
SOCIAL_AUTH_GOOGLE_OAUTH2_SECRET = os.getenv("SOCIAL_AUTH_GOOGLE_OAUTH2_SECRET")
if "SOCIAL_AUTH_GOOGLE_OAUTH2_WHITELISTED_DOMAINS" in os.environ:
    SOCIAL_AUTH_GOOGLE_OAUTH2_WHITELISTED_DOMAINS: List[str] = os.environ[
        "SOCIAL_AUTH_GOOGLE_OAUTH2_WHITELISTED_DOMAINS"
    ].split(",")
elif DEMO:
    
    
    SOCIAL_AUTH_GOOGLE_OAUTH2_WHITELISTED_DOMAINS = ["posthog.com"]
MATERIALIZE_COLUMNS_SCHEDULE_CRON = get_from_env("MATERIALIZE_COLUMNS_SCHEDULE_CRON", "0 5 * * SAT")
MATERIALIZE_COLUMNS_MINIMUM_QUERY_TIME = get_from_env("MATERIALIZE_COLUMNS_MINIMUM_QUERY_TIME", 3000, type_cast=int)
MATERIALIZE_COLUMNS_ANALYSIS_PERIOD_HOURS = get_from_env(
    "MATERIALIZE_COLUMNS_ANALYSIS_PERIOD_HOURS", 7 * 24, type_cast=int
)
MATERIALIZE_COLUMNS_BACKFILL_PERIOD_DAYS = get_from_env("MATERIALIZE_COLUMNS_BACKFILL_PERIOD_DAYS", 90, type_cast=int)
MATERIALIZE_COLUMNS_MAX_AT_ONCE = get_from_env("MATERIALIZE_COLUMNS_MAX_AT_ONCE", 10, type_cast=int)
BILLING_SERVICE_URL = get_from_env("BILLING_SERVICE_URL", "https://billing.posthog.com")