[WinFirst] Restructure FirstRun as just WinFirst

src/bootstrap.js

@@ -103,7 +103,7 @@ const startUpdate = () => {
     inst.on('InconsistentInstallerState', fatal);
     inst.on('update-error', console.error);
 
-    require('./firstRun').do(inst);
+    require('./winFirst').do(inst);
   } else {
     moduleUpdater.init(Constants.UPDATE_ENDPOINT, buildInfo);
   }

src/firstRun/index.js

@@ -1,9 +0,0 @@
-// Depends on platform
-switch (process.platform) {
-  case 'win32':
-    module.exports = require('./win32.js');
-    break;
-
-  default:
-    module.exports = require('./stub.js');
-}

src/firstRun/stub.js

@@ -1,2 +0,0 @@
-// Generic exports for stub (Linux and Darwin use it), normal Discord
-exports.do = () => {};

src/winFirst.js

@@ -1,7 +1,7 @@
 const fs = require('fs');
 const { join, resolve, basename } = require('path');
 
-const Constants = require('../Constants');
+const Constants = require('./Constants');
 
 const exec = process.execPath;
 const app = resolve(exec, '..');