diff --git a/py/h2o_wavelite/core.py b/py/h2o_wavelite/core.py
index 5a12b1143d..b0a43ee399 100644
--- a/py/h2o_wavelite/core.py
+++ b/py/h2o_wavelite/core.py
@@ -52,10 +52,6 @@ def _guard_key(key: str):
             raise KeyError('invalid key type: want str or int')
 
 
-class ServiceError(Exception):
-    pass
-
-
 DICT = '__kv'
 
 
diff --git a/py/h2o_wavelite/metadata.py b/py/h2o_wavelite/metadata.py
deleted file mode 100644
index 7554770bd6..0000000000
--- a/py/h2o_wavelite/metadata.py
+++ /dev/null
@@ -1,4 +0,0 @@
-
-# Generated in setup.py.
-__platform__ = "darwin"
-__arch__ = "amd64"