documentation: Removed a line about python version requirements of training script which can misguide users. (#5057)

* change: Allow telemetry only in supported regions

* change: Allow telemetry only in supported regions

* change: Allow telemetry only in supported regions

* change: Allow telemetry only in supported regions

* change: Allow telemetry only in supported regions

* documentation: Removed a line about python version requirements of training script which can misguide users.Training script can be of latest version based on the support provided by framework_version of the container

---------

Co-authored-by: Roja Reddy Sareddy <rsareddy@amazon.com>

Author: rsareddy0329

doc/frameworks/pytorch/using_pytorch.rst

@@ -28,8 +28,6 @@ To train a PyTorch model by using the SageMaker Python SDK:
 Prepare a PyTorch Training Script
 =================================
 
-Your PyTorch training script must be a Python 3.6 compatible source file.
-
 Prepare your script in a separate source file than the notebook, terminal session, or source file you're
 using to submit the script to SageMaker via a ``PyTorch`` Estimator. This will be discussed in further detail below.