Remove page-count parameter, refs #15 (#16)

Should be handled more gracefully by Echo's `BasicFormatter`.

Author: mwjames

src/EchoNotificationsManager.php

@@ -65,8 +65,7 @@ public function addNotificationsDefinitions( array &$notifications, array &$noti
 'email-subject-message' => "notification-{$valueChangeNotificationType}-email-subject",
 'email-subject-params' => array(
 'user',
-'agent',
-'page-count'
+'agent'
 ),
 'email-body-batch-message' => "notification-{$valueChangeNotificationType}-email-batch-body",
 'email-body-batch-params' => array(
@@ -102,8 +101,7 @@ public function addNotificationsDefinitions( array &$notifications, array &$noti
 'email-subject-message' => "notification-{$valueChangeNotificationType}-email-subject",
 'email-subject-params' => array(
 'user',
-'agent',
-'page-count'
+'agent'
 ),
 'email-body-batch-message' => "notification-{$valueChangeNotificationType}-email-batch-body",
 'email-body-batch-params' => array(