refactor(editor): remove unused code block clipboard (#11170)

blocksuite/affine/blocks/block-code/src/code-block.ts

@@ -25,7 +25,6 @@ import { query } from 'lit/decorators.js';
 import { classMap } from 'lit/directives/class-map.js';
 import { bundledLanguagesInfo, type ThemedToken } from 'shiki';
 
-import { CodeClipboardController } from './clipboard/index.js';
 import { CodeBlockConfigExtension } from './code-block-config.js';
 import { CodeBlockInlineManagerExtension } from './code-block-inline.js';
 import { CodeBlockHighlighter } from './code-block-service.js';
@@ -36,8 +35,6 @@ export class CodeBlockComponent extends CaptionedBlockComponent<CodeBlockModel>
 
   private _inlineRangeProvider: InlineRangeProvider | null = null;
 
-  clipboardController = new CodeClipboardController(this);
-
   highlightTokens$: Signal<ThemedToken[][]> = signal([]);
 
   languageName$: Signal<string> = computed(() => {
@@ -144,8 +141,6 @@ export class CodeBlockComponent extends CaptionedBlockComponent<CodeBlockModel>
     super.connectedCallback();
 
     // set highlight options getter used by "exportToHtml"
-    this.clipboardController.hostConnected();
-
     this.disposables.add(
       effect(() => {
         this._updateHighlightTokens();
@@ -373,11 +368,6 @@ export class CodeBlockComponent extends CaptionedBlockComponent<CodeBlockModel>
       });
   }
 
-  override disconnectedCallback() {
-    super.disconnectedCallback();
-    this.clipboardController.hostDisconnected();
-  }
-
   override async getUpdateComplete() {
     const result = await super.getUpdateComplete();
     await this._richTextElement?.updateComplete;