diff --git a/docs/_ext/__init__.py b/docs/_ext/__init__.py
deleted file mode 100644
index 5dacceb5..00000000
--- a/docs/_ext/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-from environmentSetup import supress_nonlocal_image_warn
diff --git a/docs/_ext/environmentSetup.py b/docs/_ext/environmentSetup.py
deleted file mode 100644
index 16296018..00000000
--- a/docs/_ext/environmentSetup.py
+++ /dev/null
@@ -1,15 +0,0 @@
-
-def supress_nonlocal_image_warn():
-    import sphinx.environment
-    sphinx.environment.BuildEnvironment.warn_node = _supress_nonlocal_image_warn
-
-def _supress_nonlocal_image_warn(self, msg, node):
-    from docutils.utils import get_source_line
-
-    if not msg.startswith('nonlocal image URI found:'):
-        self._warnfunc(msg, '%s:%s' % get_source_line(node))
-
-
-
-if __name__ == '__main__':
-    checkDependencies()
diff --git a/docs/conf.py b/docs/conf.py
index 334caf27..d9bcfae7 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -258,5 +258,14 @@ texinfo_documents = [
 
 autodoc_member_order = 'bysource'
 
-from _ext import supress_nonlocal_image_warn
+def supress_nonlocal_image_warn():
+    import sphinx.environment
+    sphinx.environment.BuildEnvironment.warn_node = _supress_nonlocal_image_warn
+
+def _supress_nonlocal_image_warn(self, msg, node):
+    from docutils.utils import get_source_line
+
+    if not msg.startswith('nonlocal image URI found:'):
+        self._warnfunc(msg, '%s:%s' % get_source_line(node))
+
 supress_nonlocal_image_warn()