Remove Python section from readme (#38857)

* Remove Python section from readme

According to https://github.com/Azure/azure-sdk-for-python/blob/85a9b78304d04c51a53eb4ad295aa31345747aa8/sdk/azurestackhci/azure-mgmt-azurestackhci/_meta.json, `azure-mgmt-azurestackhci` is generated from `specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/StackHCI/readme.md` instead of `specification/azurestackhci/resource-manager/readme.md` so no need to keep python configuration.

* Add Python configuration to readme.md

Added Python configuration section in readme.md

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Co-authored-by: vishal-kadam <33834843+vishal-kadam@users.noreply.github.com>

Author: msyyc

specification/azurestackhci/resource-manager/readme.md

@@ -497,7 +497,6 @@ This is not used by Autorest itself.
 
 ``` yaml $(swagger-to-sdk)
 swagger-to-sdk:
-  - repo: azure-sdk-for-python
   - repo: azure-sdk-for-java
   - repo: azure-sdk-for-js
   - repo: azure-sdk-for-ruby