Remove deprecated use of providing_args

Author: robalar

django_pgviews/signals.py

@@ -1,5 +1,5 @@
 from django.dispatch import Signal
 
 
-view_synced = Signal(providing_args=["update", "force", "status", "has_changed", "using"])
-all_views_synced = Signal(providing_args=["using"])
+view_synced = Signal()
+all_views_synced = Signal()