Remove classifier Pypi doesn't know about

CHANGELOG.md

@@ -9,6 +9,10 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Fixed
+
+- Pypi won't take a new classifier
+
 ## [1.2.1] - 2022-02-11
 
 ### Fixed

setup.py

@@ -42,7 +42,6 @@ setup(
     license="MIT",
     classifiers=[
         "Development Status :: 5 - Production/Stable",
-        "Environment :: Pretix",
         "Framework :: Django",
         "License :: OSI Approved :: MIT License",
         "Topic :: Communications :: Chat",