golangci lint 적용

backend/internal/handler/user_handler.go

@@ -548,7 +548,7 @@ func (h *UserHandler) DeleteUser(c *fiber.Ctx) error {
 			ctx := context.Background()
 			// Fetch user from DB before cleanup if needed, but here we cleanup common namespaces
 			_ = h.KetoService.DeleteRelation(ctx, "System", "global", "super_admins", uID)
-			
+
 			// If we had more complex relations, we would query Keto first or use user metadata
 			slog.Info("Keto relations cleaned up for user", "userID", uID)
 		}(userID)