Revert "[Mobile] Add BrowserStack Android MAUI Test (#23383)" (#23474)

This reverts commit 9f9fcf7.

### Motivation and Context
- NuGet packaging pipelines failing with this error:
```Files\dotnet\packs\Microsoft.NET.Runtime.MonoTargets.Sdk\8.0.12\Sdk\RuntimeComponentManifest.targets(3,5):
error : Empty ResolveFrameworkReference.RuntimePackPath while trying to
read runtime components manifest. ResolvedFrameworkReference available:
{ Microsoft.NETCore.App, RuntimePackPath: }```

Author: carzh