Avoid duplicate @

backend/open_webui/env.py

@@ -276,9 +276,6 @@ if DATABASE_USER:
     DATABASE_CRED += f"{DATABASE_USER}"
 if DATABASE_PASSWORD:
     DATABASE_CRED += f":{DATABASE_PASSWORD}"
-if DATABASE_CRED:
-    DATABASE_CRED += "@"
-
 
 DB_VARS = {
     "db_type": DATABASE_TYPE,