diff --git a/xmodule/tests/test_util_builtin_assets.py b/xmodule/tests/test_util_builtin_assets.py
index ea5933c79215..b922ec4b6a65 100644
--- a/xmodule/tests/test_util_builtin_assets.py
+++ b/xmodule/tests/test_util_builtin_assets.py
@@ -10,64 +10,6 @@
 from xmodule.util import builtin_assets
 
 
-class AddSassToFragmentTests(TestCase):
-    """
-    Tests for add_sass_to_fragment.
-
-    We would have liked to also test two additional cases:
-    * When a theme is enabled, and add_sass_to_fragment is called with a
-      theme-overriden Sass file, then a URL to themed CSS is added.
-    * When a theme is enabled, but add_sass_to_fragment is called with a Sass
-      file that the theme doesn't override, then a URL to the original (unthemed)
-      CSS is added.
-    Unfortunately, under edx-platform tests, settings.STATICFILES_STORAGE does not
-    include the ThemeStorage class, so themed URL generation doesn't work.
-    """
-
-    def test_absolute_path_raises_value_error(self):
-        fragment = Fragment()
-        with self.assertRaises(ValueError):
-            builtin_assets.add_sass_to_fragment(
-                fragment,
-                "/openedx/edx-platform/xmodule/assets/ProblemBlockDisplay.scss",
-            )
-
-    def test_not_scss_raises_value_error(self):
-        fragment = Fragment()
-        with self.assertRaises(ValueError):
-            builtin_assets.add_sass_to_fragment(
-                fragment,
-                "vertical/public/js/vertical_student_view.js"
-            )
-
-    def test_misspelled_path_raises_not_found(self):
-        fragment = Fragment()
-        with self.assertRaises(FileNotFoundError):
-            builtin_assets.add_sass_to_fragment(
-                fragment,
-                "ProblemBlockDisplayyyy.scss",
-            )
-
-    def test_static_file_missing_raises_improperly_configured(self):
-        fragment = Fragment()
-        with patch.object(builtin_assets, 'get_static_file_url', lambda _path: None):
-            with self.assertRaises(ImproperlyConfigured):
-                builtin_assets.add_sass_to_fragment(
-                    fragment,
-                    "ProblemBlockDisplay.scss",
-                )
-
-    def test_happy_path(self):
-        fragment = Fragment()
-        builtin_assets.add_sass_to_fragment(fragment, "ProblemBlockDisplay.scss")
-        assert fragment.resources[0] == FragmentResource(
-            kind='url',
-            data='/static/css/ProblemBlockDisplay.css',
-            mimetype='text/css',
-            placement='head',
-        )
-
-
 class AddCssToFragmentTests(TestCase):
     """
     Tests for add_css_to_fragment.