remove long description on setup.py because pypi whines about it

setup.py

@@ -16,14 +16,8 @@ import os.path
 
 readme = ''
 here = os.path.abspath(os.path.dirname(__file__))
-readme_path = os.path.join(here, 'README.md')
-if os.path.exists(readme_path):
-    with open(readme_path, 'rb') as stream:
-        readme = stream.read().decode('utf8')
-
 
 setup(
-    long_description=readme,
     name='tenkan',
     version='0.1.5',
     description='RSS/atom feed converter from html to gemini',