Remove create-platform-image command from indexify-cli

[j3m7]

Context

Code doesn't belong here

What

Removes the create-platform-image command from indexify.

Testing

Run indexify-cli create-platform-image and the command won't work.

Contribution Checklist

• If the python-sdk was changed, please run make fmt in python-sdk/.
• If the server was changed, please run make fmt in server/.
• Make sure all PR Checks are passing.