[kuryr] Proposal to clean up Kuryr core reviewers

Hello, We went through the list of current Kuryr core reviewers on the last PTG session and we noticed a couple of people that are not active Kuryr contributors anymore. I would to propose removing the following contributors from the Kuryr core team: - Irena Berezovsky - Gal Sagie - Liping Mao I take this opportunity to thank all of them for their contributions to the Kuryr project. I will wait one week for any feedback before proceeding with the removal. Thank you, Maysa Macedo