Remove copilot code block scheme (microsoft#225071)

This scheme is no longer used

Author: mjbvz

src/vs/base/common/network.ts

@@ -75,11 +75,6 @@ export namespace Schemas {
 	/** Scheme used for code blocks in chat. */
 	export const vscodeChatCodeBlock = 'vscode-chat-code-block';
 
-	/**
-	 * Scheme used for backing documents created by copilot for chat.
-	 */
-	export const vscodeCopilotBackingChatCodeBlock = 'vscode-copilot-chat-code-block';
-
 	/** Scheme used for LHS of code compare (aka diff) blocks in chat. */
 	export const vscodeChatCodeCompareBlock = 'vscode-chat-code-compare-block';
 

src/vs/editor/contrib/gotoSymbol/browser/goToSymbol.ts

@@ -22,7 +22,7 @@ function shouldIncludeLocationLink(sourceModel: ITextModel, loc: LocationLink):
 	}
 
 	// Otherwise filter out locations from internal schemes
-	if (matchesSomeScheme(loc.uri, Schemas.walkThroughSnippet, Schemas.vscodeChatCodeBlock, Schemas.vscodeChatCodeCompareBlock, Schemas.vscodeCopilotBackingChatCodeBlock)) {
+	if (matchesSomeScheme(loc.uri, Schemas.walkThroughSnippet, Schemas.vscodeChatCodeBlock, Schemas.vscodeChatCodeCompareBlock)) {
 		return false;
 	}
 

src/vs/platform/markers/common/markerService.ts

@@ -18,7 +18,6 @@ export const unsupportedSchemas = new Set([
 	Schemas.walkThrough,
 	Schemas.walkThroughSnippet,
 	Schemas.vscodeChatCodeBlock,
-	Schemas.vscodeCopilotBackingChatCodeBlock,
 ]);
 
 class DoubleResourceMap<V> {

src/vs/workbench/contrib/chat/browser/chatWidget.ts

@@ -9,7 +9,7 @@ import { disposableTimeout, timeout } from 'vs/base/common/async';
 import { toErrorMessage } from 'vs/base/common/errorMessage';
 import { Emitter, Event } from 'vs/base/common/event';
 import { Disposable, DisposableStore, IDisposable, MutableDisposable, combinedDisposable, toDisposable } from 'vs/base/common/lifecycle';
-import { matchesScheme, Schemas } from 'vs/base/common/network';
+import { Schemas } from 'vs/base/common/network';
 import { extUri, isEqual } from 'vs/base/common/resources';
 import { isDefined } from 'vs/base/common/types';
 import { URI } from 'vs/base/common/uri';
@@ -223,13 +223,7 @@ export class ChatWidget extends Disposable implements IChatWidget {
 		this._codeBlockModelCollection = this._register(instantiationService.createInstance(CodeBlockModelCollection));
 
 		this._register(codeEditorService.registerCodeEditorOpenHandler(async (input: ITextResourceEditorInput, _source: ICodeEditor | null, _sideBySide?: boolean): Promise<ICodeEditor | null> => {
-			let resource = input.resource;
-
-			// if trying to open backing documents, actually open the real chat code block doc
-			if (matchesScheme(resource, Schemas.vscodeCopilotBackingChatCodeBlock)) {
-				resource = resource.with({ scheme: Schemas.vscodeChatCodeBlock });
-			}
-
+			const resource = input.resource;
 			if (resource.scheme !== Schemas.vscodeChatCodeBlock) {
 				return null;
 			}