File asb_drop-extras-require.patch of Package python-azure-storage-blob

diff -Nru azure-storage-blob-1.3.1.orig/setup.py azure-storage-blob-1.3.1/setup.py
--- azure-storage-blob-1.3.1.orig/setup.py	2018-10-04 14:20:14.401890261 +0200
+++ azure-storage-blob-1.3.1/setup.py	2018-10-04 14:22:15.759789246 +0200
@@ -76,8 +76,5 @@
                          'azure-common>=1.1.5',
                          'azure-storage-common>=1.3'
                      ],
-    extras_require={
-        ":python_version<'3.0'": ['futures'],
-    },
     cmdclass=cmdclass
 )