skip posthog staging

.github/workflows/deploy-staging.yml

@@ -65,7 +65,6 @@ jobs:
                 STRIPE_PRO_PRICE_ID: ${STRIPE_PRO_PRICE_ID}
                 STRIPE_ENTERPRISE_PRICE_ID: ${STRIPE_ENTERPRISE_PRICE_ID}
                 POSTHOG_HOST: ${POSTHOG_HOST}
-                POSTHOG_KEY: ${POSTHOG_KEY}
                 BACKUP_HEARTBEAT_TOKEN: ${BACKUP_HEARTBEAT_TOKEN}
               networks:
                 - proxy