Remove ADM2 feature flag

ts/RemoteConfig.ts

@@ -8,7 +8,6 @@ import * as log from './logging/log';
 
 export type ConfigKeyType =
   | 'desktop.announcementGroup'
-  | 'desktop.calling.useWindowsAdm2'
   | 'desktop.canResizeLeftPane.beta'
   | 'desktop.canResizeLeftPane.production'
   | 'desktop.clientExpiration'

ts/calling/audioDeviceModule.ts

@@ -2,8 +2,6 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import { makeEnumParser } from '../util/enum';
-import { isEnabled } from '../RemoteConfig';
-import { isAlpha, isBeta } from '../util/version';
 import * as OS from '../OS';
 
 export enum AudioDeviceModule {
@@ -16,19 +14,5 @@ export const parseAudioDeviceModule = makeEnumParser(
   AudioDeviceModule.Default
 );
 
-export function getAudioDeviceModule(): AudioDeviceModule {
-  if (!OS.isWindows()) {
-    return AudioDeviceModule.Default;
-  }
-
-  const appVersion = window.getVersion();
-  if (
-    isEnabled('desktop.calling.useWindowsAdm2') ||
-    isBeta(appVersion) ||
-    isAlpha(appVersion)
-  ) {
-    return AudioDeviceModule.WindowsAdm2;
-  }
-
-  return AudioDeviceModule.Default;
-}
+export const getAudioDeviceModule = (): AudioDeviceModule =>
+  OS.isWindows() ? AudioDeviceModule.WindowsAdm2 : AudioDeviceModule.Default;

ts/test-both/calling/audioDeviceModule_test.ts

@@ -0,0 +1,39 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { assert } from 'chai';
+import * as sinon from 'sinon';
+
+import {
+  AudioDeviceModule,
+  getAudioDeviceModule,
+} from '../../calling/audioDeviceModule';
+
+describe('audio device module', () => {
+  describe('getAudioDeviceModule', () => {
+    let sandbox: sinon.SinonSandbox;
+
+    beforeEach(() => {
+      sandbox = sinon.createSandbox();
+    });
+
+    afterEach(() => {
+      sandbox.restore();
+    });
+
+    it('returns ADM2 on Windows', () => {
+      sandbox.stub(process, 'platform').get(() => 'win32');
+      assert.strictEqual(getAudioDeviceModule(), AudioDeviceModule.WindowsAdm2);
+    });
+
+    it('returns the default module on macOS', () => {
+      sandbox.stub(process, 'platform').get(() => 'darwin');
+      assert.strictEqual(getAudioDeviceModule(), AudioDeviceModule.Default);
+    });
+
+    it('returns the default module on Linux', () => {
+      sandbox.stub(process, 'platform').get(() => 'linux');
+      assert.strictEqual(getAudioDeviceModule(), AudioDeviceModule.Default);
+    });
+  });
+});