pythonformat should be removed as being identified as a malicious extension in Microsoft Marketplace

[tfroment]

what we believe to be a malicious extension from the VSCode marketplace (that was removed from there a few months back) pop up on open-vsx.org.
Its ID appears in the VSCode control url at https://main.vscode-cdn.net/extensions/marketplace.json

Location in the Open VSX marketplace is:
https://open-vsx.org/extension/498/pythonformat

[amvanbaren]

@tfroment I've removed the extension and opened EclipseFdn/publish-extensions#878