Fix VIP compatibility

[av3nger]

Description of the Change

Removes the RSS Importer WP-CLI command, as this command was there for legacy reasons and is no longer used.

Closes #973

How to test the Change

• Verify file changes look accurate

Changelog Entry

Developer - Remove the RSS Importer WP-CLI command.

Credits

Props: @av3nger

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added Critical Flows, Test Cases, and/or End-to-End Tests to cover my change.
• All new and existing tests pass.

[github-actions]

@av3nger thanks for the PR! Could you please fill out the PR template with description, changelog, and credits information so that we can properly review and merge this?

[dkotter]

So this file was purposely not updated coming out of #972 because it is a legacy thing that is better off just being removed. A separate issue was opened for this (#973). I'd suggest updating this PR to remove this file instead of updating the use of wp_remote_get

[av3nger]

@dkotter , thank you for the insight. I've double checked and the class is not used anywhere in the plugin. I have removed it from the plugin.