diff --git a/nova/tests/fake_libvirt_utils.py b/nova/tests/fake_libvirt_utils.py
index 4f7c96d4..020ff819 100644
--- a/nova/tests/fake_libvirt_utils.py
+++ b/nova/tests/fake_libvirt_utils.py
@@ -48,10 +48,6 @@ def copy_image(src, dest):
     pass
 
 
-def mkfs(fs, path):
-    pass
-
-
 def resize2fs(path):
     pass
 
diff --git a/nova/tests/test_libvirt.py b/nova/tests/test_libvirt.py
index 51ff3500..7e73516b 100644
--- a/nova/tests/test_libvirt.py
+++ b/nova/tests/test_libvirt.py
@@ -3753,15 +3753,6 @@ disk size: 4.4M''', ''))
         finally:
             os.unlink(dst_path)
 
-    def test_mkfs(self):
-        self.mox.StubOutWithMock(utils, 'execute')
-        utils.execute('mkfs', '-t', 'ext4', '-F', '/my/block/dev')
-        utils.execute('mkswap', '/my/swap/block/dev')
-        self.mox.ReplayAll()
-
-        libvirt_utils.mkfs('ext4', '/my/block/dev')
-        libvirt_utils.mkfs('swap', '/my/swap/block/dev')
-
     def test_write_to_file(self):
         dst_fd, dst_path = tempfile.mkstemp()
         try: