Not that I'm a Roberts fan but he's said no such thing and doubt he'd even consider such a request.
No word on censoring that btch at the Supreme court openly opposing Trump? ha! Bull sht! You cannot ask to censor one and not the other and invoke consciousness when it is partisanship you seek.
What can he do other than not assign him any opinions to write?
Justices can be encouraged, but not forced, to recuse themselves - unless the PR gets so bad they have to resign (Abe Fortas).