From 5a37b8709a751a5db5e831f020f3d5a62dc7fc1c Mon Sep 17 00:00:00 2001
From: Eric Wieser <wieser.eric@gmail.com>
Date: Wed, 18 Dec 2019 09:34:17 +0000
Subject: [PATCH] Remove unused `flatten_one_level` function

This has nothing to do with differential operators, and isn't used or documented.

In the very unlikely event that anyone was using this, the builtin `itertools.chain.from_iterable` provides similar functionality.
---
 galgebra/mv.py | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/galgebra/mv.py b/galgebra/mv.py
index e89b3763..cff29157 100644
--- a/galgebra/mv.py
+++ b/galgebra/mv.py
@@ -1946,10 +1946,6 @@ class Dop(object):
                   'debug': (False, 'True to print out debugging information'),
                   'fmt_dop': (1, '1 for normal dop partial derivative formating')}
 
-    @staticmethod
-    def flatten_one_level(lst):
-        return [inner for outer in lst for inner in outer]
-
     def __init__(self, *args, **kwargs):
 
         kwargs = metric.test_init_slots(Dop.init_slots, **kwargs)