Address review: trim meta/cross-repo comments

- BStackLocalSampleTest.cs: drop xunit-reqnroll pointer; keep a
  one-line `browserstackLocal` + port-45454 prerequisite note.
- AssemblyInfo.cs: collapse parallelism explainer to a single line
  about the SDK-spawned-process invariant.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Jimesh-browserstack

NunitPlaywrightBrowserstack.Tests/AssemblyInfo.cs

@@ -1,5 +1,3 @@
-// Allow NUnit to run [TestFixture] classes in parallel within each SDK-spawned
-// platform process. Combined with `parallelsPerPlatform: 2` in browserstack.yml,
-// each `dotnet test` produces 4 platforms x 2 fixtures = 8 concurrent sessions.
+// Run [TestFixture] classes in parallel within each SDK-spawned platform process.
 [assembly: NUnit.Framework.Parallelizable(NUnit.Framework.ParallelScope.Fixtures)]
 [assembly: NUnit.Framework.LevelOfParallelism(4)]

NunitPlaywrightBrowserstack.Tests/BStackLocalSampleTest.cs

@@ -1,14 +1,7 @@
 namespace NunitPlaywrightBrowserstack.Tests;
 
-// Mirrors xunit-reqnroll-playwright-browserstack's Features/LocalSample.feature
-// + StepDefinitions/LocalSampleSteps.cs:
-//   page.GotoAsync("http://bs-local.com:45454/")  +  title.Contains("BrowserStack Local")
-//
-// Requires:
-//   * browserstack.yml has `browserstackLocal: true`
-//   * a local HTTP server is serving a page with title containing "BrowserStack Local"
-//     on port 45454 (the sanity workflow stands up `python -m http.server 45454`
-//     against a one-file index.html harness).
+// Requires browserstack.yml has `browserstackLocal: true` and a local HTTP server
+// is serving a page with title containing "BrowserStack Local" on port 45454.
 [TestFixture]
 [Parallelizable(ParallelScope.Self)]
 public class BStackLocalSampleTest : PlaywrightFixtureBase