Removed feature override so KC_FEATURES environment variable is used instead (#1232)

Signed-off-by: Sebastian Schuster <[email protected]>

Author: sschu

docker-compose.yml

@@ -15,7 +15,7 @@ services:
       LDAP_PORT_NUMBER: 389
   keycloak:
     image: quay.io/keycloak/keycloak:26.2.5
-    command: --verbose start-dev --features=preview
+    command: --verbose start-dev
     depends_on:
     - postgres
     - openldap