TST: Remove obsolete fixture from integration test

integrationtests/test_realworld_example.py

@@ -91,15 +91,6 @@ def usemodel():
     dataset_inherits.sync_data_model(noquestion=True)
 
 
-@pytest.fixture
-def clear_database():
-    # TODO(fspreck): Remove once the corresponding advancedtools function can
-    # be used.
-    ents = db.execute_query("FIND ENTITY WITH ID>99")
-    if ents:
-        ents.delete()
-
-
 def create_identifiable_adapter():
     ident = CaosDBIdentifiableAdapter()
     ident.load_from_yaml_definition(os.path.join(DATADIR, "identifiables.yml"))