Removed unused code

src/Service/EmailService.php

@@ -1,23 +0,0 @@
-<?php
-
-namespace CachetHQ\Cachet\Service\Email;
-
-class EmailService implements ServiceInterface
-{
-    protected $properties;
-
-    public function register()
-    {
-        //
-    }
-
-    public function unregister()
-    {
-        //
-    }
-
-    public function fire($data)
-    {
-        //
-    }
-}

src/Service/ServiceInterface.php

@@ -1,10 +0,0 @@
-<?php
-
-namespace CachetHQ\Cachet\Service;
-
-interface ServiceInterface
-{
-    public function register();
-    public function unregister();
-    public function fire($data);
-}