chore: delete dead code

hub/src/agent/provider.ts

@@ -1,18 +0,0 @@
-/**
- * OpenRouter model factory.
- *
- * ADR-0017: the agent layer keeps role/model resolution separate from provider
- * construction. A run carries a resolved model id, and switching model still
- * means a new provider-bound session.
- */
-import { createOpenAICompatible } from "@ai-sdk/openai-compatible";
-import type { LanguageModel } from "ai";
-
-export function createModelFactory(): (modelId: string) => LanguageModel {
-  const provider = createOpenAICompatible({
-    name: "openrouter",
-    baseURL: process.env.OPENROUTER_BASE_URL ?? "https://openrouter.ai/api/v1",
-    headers: { Authorization: `Bearer ${process.env.OPENROUTER_API_KEY ?? ""}` },
-  });
-  return (modelId: string) => provider(modelId);
-}