Remove the surplus word from the title

Error²Federal courts, Illinois courts21st and 22nd editions

A periodical title's abbreviation drops “a”, “at”, “in”, “of” and “the” but keeps “on”, so “The Yale Law Journal” is cited as “Yale L.J.”.¹

1. 1T6 Case Names and Institutional Authors in Citations; R. 16.4 Consecutively Paginated Journals; R. 16.5 Nonconsecutively Paginated Journals and Magazines. Tables: T13 Institutional Names in Periodical Titles.
2. 2An error: the rule in note 1 allows one form, and this is not it.