catch vrayproxy for abc export instead of giving it pointcache family

openpype/hosts/maya/plugins/publish/collect_vrayproxy.py

@@ -16,6 +16,3 @@ class CollectVrayProxy(pyblish.api.InstancePlugin):
         """Collector entry point."""
         if not instance.data.get('families'):
             instance.data["families"] = []
-        if "pointcache" not in instance.data["families"]:
-            instance.data["families"].append("pointcache")
-            self.log.debug("adding to pointcache family")

openpype/hosts/maya/plugins/publish/extract_pointcache.py

@@ -18,7 +18,8 @@ class ExtractAlembic(openpype.api.Extractor):
     label = "Extract Pointcache (Alembic)"
     hosts = ["maya"]
     families = ["pointcache",
-                "model"]
+                "model",
+                "vrayproxy"]
 
     def process(self, instance):