remove collections from expect_bad_files (pep8)

Carreau · Carreau · commit 204f4ded7b7b · 2017-01-31T16:42:17.000-08:00
diff --git a/lib/matplotlib/tests/test_coding_standards.py b/lib/matplotlib/tests/test_coding_standards.py
@@ -177,7 +177,6 @@ def test_pep8_conformance_installed_files():
     expected_bad_files = ['_cm.py',
                           '_mathtext_data.py',
                           'backend_bases.py',
-                          'collections.py',
                           'font_manager.py',
                           'fontconfig_pattern.py',
                           'gridspec.py',
