diff --git a/ebook_converter/tinycss/media3.py b/ebook_converter/tinycss/media3.py
index e429582..fa4c136 100644
--- a/ebook_converter/tinycss/media3.py
+++ b/ebook_converter/tinycss/media3.py
@@ -1,10 +1,5 @@
 from ebook_converter.tinycss.css21 import CSS21Parser
 from ebook_converter.tinycss.parsing import remove_whitespace, split_on_comma, ParseError
-from ebook_converter.polyglot.builtins import error_message
-
-
-__license__ = 'GPL v3'
-__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 
 class MediaQuery(object):
@@ -96,7 +91,7 @@ class CSSMedia3Parser(CSS21Parser):
 
                     expressions.append((media_feature, expr))
             except MalformedExpression as err:
-                errors.append(ParseError(err.tok, error_message(err)))
+                errors.append(ParseError(err.tok, str(err)))
                 media_type, negated, expressions = 'all', True, ()
             queries.append(MediaQuery(media_type or 'all', expressions=tuple(expressions), negated=negated))
 
diff --git a/ebook_converter/utils/formatter.py b/ebook_converter/utils/formatter.py
index 0b1cec1..5dbbfcc 100644
--- a/ebook_converter/utils/formatter.py
+++ b/ebook_converter/utils/formatter.py
@@ -8,12 +8,6 @@ import re, string, traceback, numbers
 from ebook_converter import prints
 from ebook_converter.constants_old import DEBUG
 from ebook_converter.utils.formatter_functions import formatter_functions
-from ebook_converter.polyglot.builtins import error_message
-
-
-__license__ = 'GPL v3'
-__copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
-__docformat__ = 'restructuredtext en'
 
 
 class _Parser(object):