[cm-api] OPSAPS-36009 Comment for command retry in the cm_api Python

github needs to be updated.

- Removed the note in the comment/doc "Note: The retry will only work
for ClusterUpgrade command for now". This is not valid anymore and more
commands could become retriable soon. Maintaining a while list here is
not reasonable. A command that cannot be retried its canRetry attribute
will be false. That should be good enough.

python/src/cm_api/endpoints/types.py

@@ -574,7 +574,6 @@ def abort(self):
   def retry(self):
     """
     Retry a failed or aborted command.
-    Note: The retry will only work for ClusterUpgrade command for now.
 
     @return: A new ApiCommand object with the updated information.
     """