Removed pin setting functionality

- Simplifies security options: use multi user mode if you want to restrict access to the settings menu

backend/app.js

@@ -96,7 +96,6 @@ db.defaults(
         configWriteFlag: false,
         downloads: {},
         subscriptions: [],
-        pin_md5: '',
         files_to_db_migration_complete: false
 }).write();
 
@@ -2623,49 +2622,6 @@ app.post('/api/updateServer', async (req, res) => {
 
 });
 
-// Pin API calls
-
-app.post('/api/isPinSet', async (req, res) => {
-    let stored_pin = db.get('pin_md5').value();
-    let is_set = false;
-    if (!stored_pin || stored_pin.length === 0) {
-    } else {
-        is_set = true;
-    }
-
-    res.send({
-        is_set: is_set
-    });
-});
-
-app.post('/api/setPin', async (req, res) => {
-    let unhashed_pin = req.body.pin;
-    let hashed_pin = md5(unhashed_pin);
-
-    db.set('pin_md5', hashed_pin).write();
-
-    res.send({
-        success: true
-    });
-});
-
-app.post('/api/checkPin', async (req, res) => {
-    let input_pin = req.body.input_pin;
-    let input_pin_md5 = md5(input_pin);
-
-    let stored_pin = db.get('pin_md5').value();
-
-    let successful = false;
-
-    if (input_pin_md5 === stored_pin) {
-        successful = true;
-    }
-
-    res.send({
-        success: successful
-    });
-});
-
 // API Key API calls
 
 app.post('/api/generateNewAPIKey', function (req, res) {

backend/consts.js

@@ -66,10 +66,6 @@ let CONFIG_ITEMS = {
         'key': 'ytdl_allow_multi_download_mode',
         'path': 'YoutubeDLMaterial.Extra.allow_multi_download_mode'
     },
-    'ytdl_settings_pin_required': {
-        'key': 'ytdl_settings_pin_required',
-        'path': 'YoutubeDLMaterial.Extra.settings_pin_required'
-    },
     'ytdl_enable_downloads_manager': {
         'key': 'ytdl_enable_downloads_manager',
         'path': 'YoutubeDLMaterial.Extra.enable_downloads_manager'