fix(tests): remove undefined MockRoute export and unused imports

- Remove MockRoute from index.ts (type was removed in previous commit)
- Remove unused UPLOAD_SUCCESS, UNAUTHORIZED imports from test file

tests/mocks/index.ts

@@ -19,7 +19,6 @@ export type {
   HttpMethod,
   MockResponse,
   MockResponseBody,
-  MockRoute,
   MockHttpServerConfig,
   MockFetchHandler,
   CapturedRequest,

tests/unit/cliproxy/remote-token-uploader.test.ts

@@ -8,7 +8,7 @@ import { describe, it, expect, beforeEach, afterEach } from 'bun:test';
 import * as fs from 'fs';
 import * as path from 'path';
 import * as os from 'os';
-import { mockFetch, restoreFetch, getCapturedFetchRequests, UPLOAD_SUCCESS, UNAUTHORIZED } from '../../mocks';
+import { mockFetch, restoreFetch, getCapturedFetchRequests } from '../../mocks';
 
 describe('remote-token-uploader', () => {
   let tempDir: string;