fix(studio): keep AI provider and model details private

app/middleware/design-studio.ts

@@ -58,7 +58,6 @@ const designStudio: Middleware = async (ctx, next) => {
       addStudioGuide(
         await response.text(),
         !!process.env.APIMART_API_KEY?.trim(),
-        process.env.APIMART_MODEL?.trim() || APIMART_MODEL,
       ),
       { status: response.status, headers },
     );