remove after devel/py-setuptools is updated to at least 77.0.0

--- setup.cfg.orig	2026-05-19 17:22:01 UTC
+++ setup.cfg
@@ -1,3 +1,10 @@
+[metadata]
+license = UPL-1.0 OR Apache-2.0
+license-files =
+    LICENSE.txt
+    THIRD_PARTY_LICENSES.txt
+    NOTICE.txt
+
 [egg_info]
 tag_build = 
 tag_date = 0