remove unnecessary functions

portal/views/secure/datafile.py

@@ -493,9 +493,6 @@ class DataFileDeleteView(LoginRequiredMixin, DeleteViewMixin, DeleteView):
 class DataFileLookupJSONListView(LoginRequiredMixin, JSONListView):
     model = DataFile
 
-    def get_queryset(self):
-        pass
-
     def get_rows(self):
         rows = []
 
@@ -518,7 +515,6 @@ class DataFileLookupJSONListView(LoginRequiredMixin, JSONListView):
 
 
 class DataFileHasKeyJSONListView(DataFileLookupJSONListView):
-    model = DataFile
 
     def get_queryset(self):
         qs = DataFile.objects.accessible_to_profile(self.request.user.profile)
@@ -537,7 +533,6 @@ class DataFileHasKeyJSONListView(DataFileLookupJSONListView):
 
 
 class DataFileHasAnnotJSONListView(DataFileLookupJSONListView):
-    model = DataFile
 
     def get_queryset(self):
         qs = DataFile.objects.accessible_to_profile(self.request.user.profile)