fix: adjust for delete_index

tests/unit/test_layer.py

@@ -237,12 +237,12 @@ class TestRouteLayer:
         assert openai_encoder.score_threshold == 0.3
         assert route_layer_openai.score_threshold == 0.3
 
-    def test_delete_all(self, openai_encoder, routes, index_cls):
+    def test_delete_index(self, openai_encoder, routes, index_cls):
         index = init_index(index_cls)
         route_layer = RouteLayer(encoder=openai_encoder, routes=routes, index=index)
         if index_cls is PineconeIndex:
             time.sleep(PINECONE_SLEEP)  # allow for index to be populated
-        route_layer.index.delete_all()
+        route_layer.index.delete_index()
         if index_cls is PineconeIndex:
             time.sleep(PINECONE_SLEEP)  # allow for index to be updated
         assert route_layer.index.get_utterances() == []