diff --git a/ebook_converter/polyglot/builtins.py b/ebook_converter/polyglot/builtins.py
index 39f229a..522eb84 100644
--- a/ebook_converter/polyglot/builtins.py
+++ b/ebook_converter/polyglot/builtins.py
@@ -1,6 +1,3 @@
-import importlib
-
-
 def as_bytes(x, encoding='utf-8'):
     if isinstance(x, str):
         return x.encode(encoding)