diff --git a/fetch_configs/dartino.py b/fetch_configs/dartino.py
deleted file mode 100644
index 6f402a323..000000000
--- a/fetch_configs/dartino.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import sys
-
-import config_util  # pylint: disable=import-error
-
-# This class doesn't need an __init__ method, so we disable the warning
-# pylint: disable=no-init
-class Dartino(config_util.Config):
-  """Basic Config class for Dartino."""
-
-  @staticmethod
-  def fetch_spec(props):
-    url = 'https://github.com/dartino/sdk.git'
-    solution = {
-      'name'   :'sdk',
-      'url'    : url,
-      'deps_file': 'DEPS',
-      'managed'   : False,
-      'custom_deps': {},
-    }
-    spec = {
-      'solutions': [solution],
-    }
-    if props.get('target_os'):
-      spec['target_os'] = props['target_os'].split(',')
-    return {
-      'type': 'gclient_git',
-      'gclient_git_spec': spec,
-    }
-
-  @staticmethod
-  def expected_root(_props):
-    return 'sdk'
-
-
-def main(argv=None):
-  return Dartino().handle_args(argv)
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))
diff --git a/fetch_configs/dartium.py b/fetch_configs/dartium.py
deleted file mode 100644
index 600f1318f..000000000
--- a/fetch_configs/dartium.py
+++ /dev/null
@@ -1,45 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import sys
-
-import config_util  # pylint: disable=import-error
-
-
-# This class doesn't need an __init__ method, so we disable the warning
-# pylint: disable=no-init
-class Dart(config_util.Config):
-  """Basic Config class for Dart."""
-
-  @staticmethod
-  def fetch_spec(props):
-    url = 'https://github.com/dart-lang/sdk.git'
-    solution = {
-      'name'   :'src/dart',
-      'url'    : url,
-      'deps_file': 'tools/deps/dartium.deps/DEPS',
-      'managed'   : False,
-      'custom_deps': {},
-    }
-    spec = {
-      'solutions': [solution],
-    }
-    if props.get('target_os'):
-      spec['target_os'] = props['target_os'].split(',')
-    return {
-      'type': 'gclient_git',
-      'gclient_git_spec': spec,
-    }
-
-  @staticmethod
-  def expected_root(_props):
-    return 'src'
-
-
-def main(argv=None):
-  return Dart().handle_args(argv)
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))
diff --git a/fetch_configs/mojo.py b/fetch_configs/mojo.py
deleted file mode 100644
index 24e65a39b..000000000
--- a/fetch_configs/mojo.py
+++ /dev/null
@@ -1,45 +0,0 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import sys
-
-import config_util  # pylint: disable=import-error
-
-
-# This class doesn't need an __init__ method, so we disable the warning
-# pylint: disable=no-init
-class Mojo(config_util.Config):
-  """Basic Config class for Mojo."""
-
-  @staticmethod
-  def fetch_spec(props):
-    url = 'https://github.com/domokit/mojo.git'
-    solution = {
-      'name'   :'src',
-      'url'    : url,
-      'deps_file': 'DEPS',
-      'managed'   : False,
-      'custom_deps': {},
-    }
-    spec = {
-      'solutions': [solution],
-    }
-    if props.get('target_os'):
-      spec['target_os'] = props['target_os'].split(',')
-    return {
-      'type': 'gclient_git',
-      'gclient_git_spec': spec,
-    }
-
-  @staticmethod
-  def expected_root(_props):
-    return 'src'
-
-
-def main(argv=None):
-  return Mojo().handle_args(argv)
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))
diff --git a/recipes/recipes/fetch_end_to_end_test.py b/recipes/recipes/fetch_end_to_end_test.py
index 07fad7096..a80ee053c 100644
--- a/recipes/recipes/fetch_end_to_end_test.py
+++ b/recipes/recipes/fetch_end_to_end_test.py
@@ -19,18 +19,21 @@ def RunSteps(api):
   api.bot_update.ensure_checkout()
 
   # List fetch configs available in the test depot_tools checkout.
-  fetch_configs = sorted(
+  fetch_configs = set(
       api.path.basename(f)[:-3] for f in api.file.listdir(
           'listdir fetch_configs', api.path['checkout'].join('fetch_configs'))
       if str(f).endswith('.py'))
 
+  # config_util is a helper library, not a config.
+  fetch_configs.discard('config_util')
+
   # Try to run "fetch" for each of the configs. It's important to use
   # the checkout under test.
   with api.context(
       env={'DEPOT_TOOLS_UPDATE': '0', 'CHROME_HEADLESS': '1'},
       env_prefixes={'PATH': [api.path['checkout']]}):
     with api.step.defer_results():
-      for config_name in fetch_configs:
+      for config_name in sorted(fetch_configs):
         # Create a dedicated temp directory. We want to test checking out
         # from scratch.
         temp_dir = api.path.mkdtemp('fetch_end_to_end_test_%s' % config_name)