[Tutorial][PTD] Deprecate Single-Machine Model Parallel Best Practices (#3135)

Co-authored-by: Svetlana Karslioglu <[email protected]>

Author: wz337

intermediate_source/model_parallel_tutorial.py

@@ -0,0 +1,10 @@
+Single-Machine Model Parallel Best Practices
+============================================
+
+This tutorial has been deprecated.
+
+Redirecting to latest parallelism APIs in 3 seconds...
+
+.. raw:: html
+
+   <meta http-equiv="Refresh" content="3; url='https://pytorch.org/tutorials/beginner/dist_overview.html#parallelism-apis'" />