refactor(@angular-devkit/build-angular): remove no longer applicable …

…comment

This comment is no longer correct.

(cherry picked from commit 36d9f19)

packages/angular_devkit/build_angular/src/utils/environment-options.ts

@@ -100,6 +100,5 @@ export const useLegacySass: boolean = (() => {
 const debugPerfVariable = process.env['NG_BUILD_DEBUG_PERF'];
 export const debugPerformance = isPresent(debugPerfVariable) && isEnabled(debugPerfVariable);
 
-// Default to true on Windows to workaround Visual Studio atomic file saving watch issues
 const watchRootVariable = process.env['NG_BUILD_WATCH_ROOT'];
 export const shouldWatchRoot = isPresent(watchRootVariable) && isEnabled(watchRootVariable);