get rid of legacy dependencies

Guillaume Rousse · Guillaume Rousse · commit bfe68b8571dc · 2019-07-11T17:55:47.000+02:00
diff --git a/setup.py b/setup.py
@@ -31,7 +31,6 @@
     'ipaddr',
     'publicsuffix2',
     'redis',
-    'futures',
     'requests',
     'requests_cache',
     'requests_file',
