Just drop the classifier entirely
diff --git a/setup.py b/setup.py
index 73d98aa..81a50f4 100644
--- a/setup.py
+++ b/setup.py
@@ -81,7 +81,6 @@
     author_email=about["__email__"],
 
     classifiers=[
-        "Development Status :: 4 - Beta",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: Apache Software License",
         "Natural Language :: English",