fix: drop object_revisions from generic entities edit view

The variable is passed to the template via the context but not used
anywhere and it creates problems with ontologies not using reversion.
Therefore we drop the variable.

apis_core/apis_entities/edit_generic.py

@@ -103,7 +103,6 @@ def get(self, request, *args, **kwargs):
                 apis_bibsonomy = "|".join([x.strip() for x in apis_bibsonomy])
         else:
             apis_bibsonomy = False
-        object_revisions = Version.objects.get_for_object(self.instance)
         object_lod = Uri.objects.filter(root_object=self.instance)
         object_labels = Label.objects.filter(temp_entity__id=self.instance.id)
         tb_label = LabelTableEdit(
@@ -118,7 +117,6 @@ def get(self, request, *args, **kwargs):
             "form": form,
             "instance": self.instance,
             "right_card": side_bar,
-            "object_revisions": object_revisions,
             "object_lod": object_lod,
             "apis_bibsonomy": apis_bibsonomy,
         }