Has `Syllabus errorum' been revoked by the Catholic Church?

At least since the pontificate of John Paul II, and definitely during the times of Francis, the Church ignores the teaching of many popes including - *Quanta cura * together with *Syllabus Errorum * by Pius IX - *Pascendi Dominici Gregis * by Pius X - *Mortalium animos * by Pius XI and, in fact, acts against the teachings explained therein. Vatican II documents never fully revoked these documents explicitly. The question is if Vatican II did it as a pastoral council (it was a council that was not infallible as confirmed by Paul VI so it couldn't do it anyway). So my question is: is the hierarchy of the Catholic Church in a state of contradiction? If something was declared by Pius IX, X, or XI as sinful can it be without being explained as erroneous, ignored and in fact encouraged as John Paul II Assisi-style ecumenism?