Removed code of Azure Remote Rendering (#43420)

Co-authored-by: Michael Zappe <[email protected]>

Author: MichaelZp0

sdk/remoterendering/TestResources/testBox.fbx

@@ -1 +1,7 @@
-This package has been deprecated and will no longer be maintained after 10-01-2025. This package will only receive security fixes until 10-01-2025.
+# Azure Remote Rendering SDK for Python
+
+This package has been deprecated and will no longer be maintained after 10-01-2025. This package will only receive security fixes until 10-01-2025.
+
+Package source code and samples have been removed from the `main` branch and can be found under the release tag for the latest version. See [azure-mixedreality-remoterendering_1.0.0b2](https://github.com/Azure/azure-sdk-for-python/releases/tag/azure-mixedreality-remoterendering_1.0.0b2). The latest release can be found on [PyPI](https://pypi.org/project/azure-mixedreality-remoterendering).
+
+If you have any questions, please open a [GitHub Issue](https://github.com/Azure/azure-sdk-for-python/issues) or email `[email protected]`.