[downloader/http] Remove gruesome import

youtube_dl/downloader/http.py

@@ -1,11 +1,10 @@
 from __future__ import unicode_literals
 
+import errno
 import os
+import socket
 import time
 
-from socket import error as SocketError
-import errno
-
 from .common import FileDownloader
 from ..compat import (
     compat_urllib_request,
@@ -102,7 +101,7 @@ class HttpFD(FileDownloader):
                             resume_len = 0
                             open_mode = 'wb'
                             break
-            except SocketError as e:
+            except socket.error as e:
                 if e.errno != errno.ECONNRESET:
                     # Connection reset is no problem, just retry
                     raise