Remove ephemeral properties from bridge whitelist

With this change, the show differences code is completely out for
the moment, but there should be no more unexpected properties on
annotations objects at all.

Fix #1207

h/static/scripts/services.coffee

@@ -91,10 +91,7 @@ class Hypothesis extends Annotator
 
     # Set up the bridge plugin, which bridges the main annotation methods
     # between the host page and the panel widget.
-    whitelist = [
-      'diffHTML', 'inject', 'quote', 'ranges', 'target', 'id', 'references',
-      'uri', 'diffCaseOnly', 'document',
-    ]
+    whitelist = ['target', 'document', 'uri']
     this.addPlugin 'Bridge',
       gateway: true
       formatter: (annotation) =>