Remove spurious index ref

Author: GavinMendelGleason

lib/query/woqlQuery.js

@@ -100,7 +100,6 @@ WOQLQuery.prototype.and = function(...queries) {
     this.cursor['@type'] = 'And'
     if (typeof this.cursor['and'] == 'undefined') this.cursor['and'] = []
     for (let i = 0; i < queries.length; i++) {
-        let index = this.cursor['and'].length
         let onevar = this.jobj(queries[i])
         if (
             onevar['@type'] == 'And' &&