setup.py: license classifier is deprecated, removing

Author: proycon

setup.py

@@ -70,7 +70,7 @@
     author = "Maarten van Gompel",
     author_email = "proycon@anaproy.nl",
     description = ("Python binding to Frog, an NLP suite for Dutch doing part-of-speech tagging, lemmatisation, morphological analysis, named-entity recognition, shallow parsing, and dependency parsing."),
-    license = "GPLv3",
+    license = "GPL-3.0-only",
     keywords = "nlp computational_linguistics dutch pos lemmatizer",
     url = "https://github.com/proycon/python-frog",
     ext_modules = extensions,
@@ -86,6 +86,5 @@
         "Operating System :: POSIX",
         "Intended Audience :: Developers",
         "Intended Audience :: Science/Research",
-        "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
     ],
 )