fix: remove time.sleep from tests added

Author: gauravbansal-curefit

integrations/opensearch/tests/test_document_store.py

@@ -655,5 +655,4 @@ def test_delete_with_routing(self, document_store: OpenSearchDocumentStore):
         routing_map = {"1": "user_a", "2": "user_b"}
         document_store.delete_documents(["1", "2"], routing=routing_map)
 
-        time.sleep(1)
         assert document_store.count_documents() == 1