remove dependency on Meta_Sales constant from Meta_BusinessExtension

Author: sdaugherty-rp

app/code/Meta/BusinessExtension/Helper/GraphAPIAdapter.php

@@ -18,7 +18,6 @@
 namespace Meta\BusinessExtension\Helper;
 
 use CURLFile;
-use Meta\Sales\Model\FacebookOrder;
 use Meta\BusinessExtension\Model\System\Config as SystemConfig;
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\BadResponseException;
@@ -29,6 +28,9 @@ class GraphAPIAdapter
 {
     const GET_ORDERS_LIMIT = 25;
 
+    /** @var string */
+    private const ORDER_STATE_CREATED = 'STATE_CREATED';
+
     /**
      * @var mixed
      */
@@ -375,7 +377,7 @@ public function getOrders($pageId, $cursorAfter = false)
         ];
         $request = [
             'access_token' => $this->accessToken,
-            'state' => FacebookOrder::STATE_CREATED,
+            'state' => self::ORDER_STATE_CREATED,
             'fields' => implode(',', $requestFields),
             'limit' => self::GET_ORDERS_LIMIT,
         ];