remove hard dependency on speakcivi

CRM/Utmaltor/Logic/Smarty.php

@@ -36,7 +36,9 @@ class CRM_Utmaltor_Logic_Smarty {
   private function __construct($params) {
     $this->variables['mailing_id'] = $params['id'];
     $this->variables['campaign_id'] = $params['campaign_id'];
-    $this->variables['campaign_lang'] = $this->getLanguage($params['campaign_id']);
+    if (class_exists('CRM_Speakcivi_Logic_Campaign')) {
+      $this->variables['campaign_lang'] = $this->getLanguage($params['campaign_id']);
+    }
     $this->variables['date'] = date('YmdHis');
     $this->smartyCache = array();
     $this->smarty = CRM_Core_Smarty::singleton();