validate ftrack attributes from settings

pype/plugins/ftrack/publish/validate_custom_ftrack_attributes.py

@@ -61,12 +61,8 @@ class ValidateFtrackAttributes(pyblish.api.InstancePlugin):
                         "Missing FTrack Task entity in context")
 
         host = pyblish.api.current_host()
-        to_check = (
-            context.data["project_settings"]
-            ["ftrack"]
-            .get(host, {})
-            .get("ftrack_custom_attributes")
-        )
+        to_check = self.ftrack_custom_attributes.get(host, {}))
+
         if not to_check:
             self.log.warning("ftrack_attributes preset not found")
             return