Technically it's already gone, inside the hangout tab it just says, "Call phones feature is not available." with a link to https://support.google.com/hangouts/a

Technically it's already gone, inside the hangout tab it just says, "Call phones feature is not available." with a link to https://support.google.com/hangouts/answer/3205646 https://support.google.com/hangouts/answer/3205646