Update NativeModuleSample/cpp-lib to RNW 0.83.0

samples/NativeModuleSample/cpp-lib/README.md

@@ -23,12 +23,6 @@ To run the example app (targeting the New Architecture) and see that the module
 yarn example windows
 ```
 
-Alternatively, to run the old example app (targeting the Old Architecture) and see that the module works:
-
-```
-yarn example-old windows
-```
-
 ### Upgrade
 
 First run the **Setup** steps above. Then run the `UpgradeSmokeTest.ps1` script with the target RNW version (usually `latest`):
@@ -44,4 +38,4 @@ yarn prepare
 yarn codegen-windows
 ```
 
-Finally, build and verify *both* example apps as per the **Run** steps above. If both apps work without issue, then go ahead and submit the PR with your changes.
+Finally, build and verify the example app as per the **Run** steps above. If the app works without issue, then go ahead and submit the PR with your changes.