diff --git a/src/calibre/ebooks/oeb/polish/hyphenation.py b/src/calibre/ebooks/oeb/polish/hyphenation.py
index ae6da750c8..96d2386d63 100644
--- a/src/calibre/ebooks/oeb/polish/hyphenation.py
+++ b/src/calibre/ebooks/oeb/polish/hyphenation.py
@@ -2,8 +2,6 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from calibre.ebooks.oeb.base import OEB_DOCS
 from polyglot.builtins import iteritems
 
diff --git a/src/calibre/gui2/palette.py b/src/calibre/gui2/palette.py
index b4971b6af0..951969de4a 100644
--- a/src/calibre/gui2/palette.py
+++ b/src/calibre/gui2/palette.py
@@ -2,8 +2,6 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from PyQt5.Qt import QColor, QPalette, Qt
 from calibre.constants import dark_link_color
 
diff --git a/src/calibre/gui2/viewer/search.py b/src/calibre/gui2/viewer/search.py
index fcb4fa9baa..72a4a70960 100644
--- a/src/calibre/gui2/viewer/search.py
+++ b/src/calibre/gui2/viewer/search.py
@@ -2,8 +2,6 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import json
 import re
 from collections import Counter, OrderedDict
diff --git a/src/calibre/utils/xml_parse.py b/src/calibre/utils/xml_parse.py
index aff73a6efc..6b67d6bae2 100644
--- a/src/calibre/utils/xml_parse.py
+++ b/src/calibre/utils/xml_parse.py
@@ -2,8 +2,6 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from lxml import etree
 
 # resolving of SYSTEM entities is turned off as entities can cause