refactor: remove unused deprecated code

- remove hasMcpWebSearch(), getMcpConfigPath() from websearch-manager

- delete deprecated web-server/routes.ts (no imports)

src/utils/websearch-manager.ts

@@ -13,9 +13,6 @@
  * @module utils/websearch-manager
  */
 
-import * as path from 'path';
-import * as os from 'os';
-
 // Re-export types
 export type {
   GeminiCliStatus,
@@ -83,17 +80,3 @@ export function clearAllCliCaches(): void {
 export function ensureMcpWebSearch(): boolean {
   return false;
 }
-
-/**
- * @deprecated MCP is no longer used
- */
-export function hasMcpWebSearch(): boolean {
-  return false;
-}
-
-/**
- * @deprecated MCP is no longer used
- */
-export function getMcpConfigPath(): string {
-  return path.join(os.homedir(), '.claude', '.mcp.json');
-}

src/web-server/routes.ts

@@ -1,10 +0,0 @@
-/**
- * REST API Routes - Re-export from modular routes
- *
- * This file exists for backward compatibility.
- * All routes have been modularized into src/web-server/routes/ directory.
- *
- * @deprecated Import from './routes/index' instead
- */
-
-export { apiRoutes } from './routes/index';