Remove unnecessary guard

All dicts in a context have an .items() method. The Context class is a
subclass of dict.

Author: jdufresne

debug_toolbar/panels/templates/panel.py

@@ -93,7 +93,7 @@ def _store_template_info(self, sender, **kwargs):
 
         context_list = []
         for context_layer in context.dicts:
-            if hasattr(context_layer, "items") and context_layer:
+            if context_layer:
                 # Refs GitHub issue #910
                 # If we can find this layer in our pseudo-cache then find the
                 # matching prettified version in the associated list.