remove Settings module

Better not to have this at all than to have a library that you can't
actually use in widgets/boot/settings code

README.md

@@ -384,14 +384,18 @@ Example `settings.js`
 ```js
 // make sure to enclose the function in parentheses
 (function(back) {
-  function get(key, def) { return require('Settings').get('myappid', key, def); }
-  function set(key, value) { require('Settings').set('myappid', key, value); }
+  let settings = require('Storage').readJSON('myappid.json',1)||{};
+  if (typeof settings.monkeys !== "number") settings.monkeys = 12; // default value 
+  function save(key, value) {
+    settings[key] = value;
+    require('Storage').write('myappid.json', settings);
+  }
   const appMenu = {
     '': {'title': 'App Settings'},
     '< Back': back,
     'Monkeys': {
-      value: get('monkeys', 12),
-      onchange: (m) => set('monkeys', m)
+      value: settings.monkeys,
+      onchange: (m) => {save('monkeys', m)}
     }   
   };
   E.showMenu(appMenu)