Remove unnecessary require

src/create-type.js

@@ -5,7 +5,6 @@ const mapObj = require("map-obj");
 
 const typeRules = require("./type-rules");
 const generateDescriptor = require("./generate-descriptor");
-const generateValidator = require("./generate-validator");
 const getSchemaKeys = require("./util/get-schema-keys");
 const nullMissingFields = require("./util/null-missing-fields");