[Python] reduce size for azure-mgmt-network

[msyyc]

In terms of the large size for azure-mgmt-network, more customers complain about that. I think the following advice from customers make sense:
I understand the reasoning for the approach to keep everything for backward compatibility but if you do have customers that point to the old versions then they should pin their requirement versions to the old pypi.org releases of the Azure SDK, not force everyone to keep a copy of everything around. ( come from #17801 (comment))

[msyyc]

RE: Proposal for removing unused API versions from azure-mgmt-network to reduce package size

these api-version may be used by azure-stack and azure-cli:
https://github.com/Azure/azure-rest-api-specs/tree/main/profile
https://github.com/azure/azure-cli/blob/dev/src/azure-cli-core/azure/cli/core/profiles/_shared.py

[msyyc]

remove 2017-08-01: https://github.com/Azure/sdk-release-request/issues/2088

[msyyc]

remove 2017-09-01 and 2017-11-01 : https://github.com/Azure/sdk-release-request/issues/2200

[msyyc]

will go on in another issue.

[msyyc]

Let me paste the data in e-mail to raise more attention for architect

[yehudacohen]

Is there an update on when this will be ready? It's august already

[kapilt]

also why is this specific to azure network, its a design flaw in the sdk across every single service, azure network just happens to be the most egregious.

[lmazuel]

Duplicate of #17801, where we post most of the update on the topic