Remove debug and change version to release

www.eng/js/porting/persistent.js

@@ -8,17 +8,14 @@ window.PERSISTENT_IMPLEMENTATIONS = {
 function localStorageImplementation() {
     return {
         readSaveFileUTF8(path) {
-            console.log(`Failed to get externalStorage. Using localStorage to read save at ${path}`);
             return localStorage.getItem(path);
         },
 
         saveFileExists(path) {
-            console.log(`Using localStorage while checking save file ${path} existence`);
             return localStorage.getItem(path) != null;
         },
 
         writeSaveFileUTF8(path, data) {
-            console.log(`Failed to get externalStorage. Writing ${path} save file to the localStorage`);
             localStorage.setItem(path, data);
         }
     };