Remove version number from default version comment (#1237)

Author: ajaykarpur

src/sagemaker/pytorch/defaults.py

@@ -15,8 +15,7 @@
 
 PYTORCH_VERSION = "0.4"
 """Default PyTorch version for when the framework version is not specified.
-The latest PyTorch version is 1.1.0, but the default version is no longer updated so as to not
-break existing workflows.
+The default version is no longer updated so as to not break existing workflows.
 """
 
 LATEST_VERSION = "1.3.1"