Revert logic for checking for duplicate installations of DevTools (#22638)

* Revert "Only show DevTools warning about unrecognized build in Chrome (#22571)"

This reverts commit b72dc8e930.

* Revert "Show warning in UI when duplicate installations of DevTools extension are detected (#22563)"

This reverts commit 930c9e7eeb.

* Revert "Prevent errors/crashing when multiple installs of DevTools are present (#22517)"

This reverts commit 545d4c2de7.

* Remove all references to passing extensionId in postMessage

* Keep build changes

* lint

packages/react-devtools-extensions/src/contentScript.js

@@ -2,8 +2,6 @@
 
 'use strict';
 
-import {CURRENT_EXTENSION_ID} from './constants';
-
 let backendDisconnected: boolean = false;
 let backendInitialized: boolean = false;
 
@@ -12,7 +10,6 @@ function sayHelloToBackend() {
     {
       source: 'react-devtools-content-script',
       hello: true,
-      extensionId: CURRENT_EXTENSION_ID,
     },
     '*',
   );
@@ -23,7 +20,6 @@ function handleMessageFromDevtools(message) {
     {
       source: 'react-devtools-content-script',
       payload: message,
-      extensionId: CURRENT_EXTENSION_ID,
     },
     '*',
   );
@@ -53,7 +49,6 @@ function handleDisconnect() {
         type: 'event',
         event: 'shutdown',
       },
-      extensionId: CURRENT_EXTENSION_ID,
     },
     '*',
   );