Remove unneeded test

Author: Alex Schworer

test/test_zencoder.py

@@ -34,12 +34,6 @@ def test_set_api_edge_version(self):
         zc = Zencoder(api_version='edge')
         self.assertEquals(zc.base_url, 'https://app.zencoder.com/api/')
 
-    def test_zero_content_length(self):
-        os.environ['ZENCODER_API_KEY'] = 'abcd123'
-        zc = Zencoder()
-        content = None
-        self.assertEquals(zc.job.content_length(content), "0")
-
 if __name__ == "__main__":
     unittest.main()