Remove unnecessary require

test/value-descriptions.js

@@ -4,7 +4,6 @@ const expect = require("chai").expect;
 
 const dm = require("../src");
 const getValueType = require("../src/util/get-value-type");
-const generateValidator = require("../src/generate-validator");
 const createGuardedMap = require("../src/guarded-collections/map");
 const createGuardedSet = require("../src/guarded-collections/set");