Update setup classifiers to be only Python 3

diff --git a/setup.py b/setup.py
index e646bcfbca4aabdd2c86eaf93733ee1538bee312..011b4fa1b3eaf0bb881bd728f45a66b193cba7ca 100644 (file)
--- a/setup.py
+++ b/setup.py
@@ -60,14 +60,13 @@ setup(
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3 :: Only",
     ],
     zip_safe=True,
 )