Removed a bunch of methods and code that wasn't used. Also added a repository for repeated expenses.

app/lib/FireflyIII/Database/Recurring.php

@@ -177,20 +177,6 @@ class Recurring implements CUD, CommonDatabaseCalls, RecurringInterface
         return ['errors' => $errors, 'warnings' => $warnings, 'successes' => $successes];
     }
 
-    /**
-     * Validates a model. Returns an array containing MessageBags
-     * errors/warnings/successes.
-     *
-     * @param Ardent $model
-     *
-     * @return array
-     */
-    public function validateObject(Ardent $model)
-    {
-        // TODO: Implement validateObject() method.
-        throw new NotImplementedException;
-    }
-
     /**
      * Returns an object with id $id.
      *