refactor(a2a): remove legacy CoreToolScheduler (#21955)

packages/a2a-server/src/utils/testing_utils.ts

@@ -20,6 +20,7 @@ import {
   tmpdir,
   type Config,
   type Storage,
+  type ToolRegistry,
 } from '@google/gemini-cli-core';
 import { createMockMessageBus } from '@google/gemini-cli-core/src/test-utils/mock-message-bus.js';
 import { expect, vi } from 'vitest';
@@ -30,6 +31,10 @@ export function createMockConfig(
   const tmpDir = tmpdir();
   // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
   const mockConfig = {
+    get toolRegistry(): ToolRegistry {
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
+      return (this as unknown as Config).getToolRegistry();
+    },
     getToolRegistry: vi.fn().mockReturnValue({
       getTool: vi.fn(),
       getAllToolNames: vi.fn().mockReturnValue([]),
@@ -64,7 +69,6 @@ export function createMockConfig(
     getEmbeddingModel: vi.fn().mockReturnValue('text-embedding-004'),
     getSessionId: vi.fn().mockReturnValue('test-session-id'),
     getUserTier: vi.fn(),
-    isEventDrivenSchedulerEnabled: vi.fn().mockReturnValue(false),
     getMessageBus: vi.fn(),
     getPolicyEngine: vi.fn(),
     getEnableExtensionReloading: vi.fn().mockReturnValue(false),