Find and replace pages with part of a url

I've made a pdf of our colleges previous course catalog and for some reason it added links to pages outside of the path for the catalog. I need to search for pages that contain part of the url "/news" and delete them from the pdf. I've tried using a javascript, but nothing in the document is ever removed.

This is what I tried:

for (var p=this.numPages-1; p>=0; p--) {

    for (var n=0; n<this.getPageNumWords(p); n++) {

        if (this.getPageNthWord(p, n) == "/news") {

            this.deletePages(p);

            break;

        }

    }

}