The removed line says: “in return the users take the engagement to host only legally-compliant contents for the country [where it is hosted].”
I certainly agree that, especially given the context of “upload filters”, closing eyes on user content can be beneficial from an ethical perspective, but I guess this sentence was added to shield the hoster from responsibility in case of a legal issue. IANAL, but I’m ready to support this MR from an ethical standpoint: hoster is not the copyright holder, so the responsibility should lie with the uploader, not the infrastructure provider.