feat: cleanup chat panel (#14258)

#### PR Dependency Tree


* **PR #14258** 👈

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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

## Release Notes

* **Removed Features**
* Web search functionality has been removed from AI chat and related AI
features. Users will no longer see network search options or toggles in
chat preferences and panels.
  * AI chat requests no longer support external web search capabilities.

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settings.</sub>

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#### PR Dependency Tree


* **PR #14258** 👈
  * **PR #14259**

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

packages/frontend/core/src/modules/index.ts

@@ -5,7 +5,6 @@ import {
   configureAIButtonModule,
   configureAIDraftModule,
   configureAIModelModule,
-  configureAINetworkSearchModule,
   configureAIPlaygroundModule,
   configureAIReasoningModule,
   configureAIToolsConfigModule,
@@ -114,7 +113,6 @@ export function configureCommonModules(framework: Framework) {
   configSearchMenuModule(framework);
   configureDndModule(framework);
   configureCommonGlobalStorageImpls(framework);
-  configureAINetworkSearchModule(framework);
   configureAIReasoningModule(framework);
   configureAIPlaygroundModule(framework);
   configureAIButtonModule(framework);