Removing polyglot getcwd and getenv

ebook_converter/polyglot/builtins.py

@@ -9,7 +9,7 @@ iterkeys = iter
 
 
 def hasenv(x):
-    return getenv(x) is not None
+    return os.getenv(x) is not None
 
 
 def as_bytes(x, encoding='utf-8'):
@@ -42,11 +42,6 @@ def reraise(tp, value, tb=None):
         tb = None
 
 
-raw_input = input
-getcwd = os.getcwd
-getenv = os.getenv
-
-
 def error_message(exc):
     args = getattr(exc, 'args', None)
     if args and isinstance(args[0], str):