diff --git a/scripts/post-build.ts b/scripts/post-build.ts
index db702801b..2193ed120 100644
--- a/scripts/post-build.ts
+++ b/scripts/post-build.ts
@@ -7,8 +7,6 @@
 import * as fs from 'node:fs';
 import * as path from 'node:path';
 
-import {sed} from './sed.ts';
-
 const BUILD_DIR = path.join(process.cwd(), 'build');
 
 /**
@@ -73,21 +71,6 @@ export const experiments = {
   `;
   writeFile(runtimeFile, runtimeContent);
 
-  // Update protocol_client to remove:
-  // 1. self.Protocol assignment
-  // 2. Call to register backend commands.
-  const protocolClientDir = path.join(
-    BUILD_DIR,
-    devtoolsFrontEndCorePath,
-    'protocol_client',
-  );
-  const clientFile = path.join(protocolClientDir, 'protocol_client.js');
-  const globalAssignment = /self\.Protocol = self\.Protocol \|\| \{\};/;
-  const registerCommands =
-    /InspectorBackendCommands\.registerCommands\(InspectorBackend\.inspectorBackend\);/;
-  sed(clientFile, globalAssignment, '');
-  sed(clientFile, registerCommands, '');
-
   copyDevToolsDescriptionFiles();
 }
 
diff --git a/scripts/sed.ts b/scripts/sed.ts
deleted file mode 100644
index 817a269a8..000000000
--- a/scripts/sed.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import * as fs from 'node:fs';
-
-/**
- * Replaces content in a file.
- * @param filePath The path to the file.
- * @param find The regex to find.
- * @param replace The string to replace with.
- */
-export function sed(
-  filePath: string,
-  find: RegExp | string,
-  replace: string,
-): void {
-  if (!fs.existsSync(filePath)) {
-    console.warn(`File not found for sed operation: ${filePath}`);
-    return;
-  }
-  const content = fs.readFileSync(filePath, 'utf-8');
-  const newContent = content.replace(find, replace);
-  fs.writeFileSync(filePath, newContent, 'utf-8');
-}