Auto merge of #29608 - mrobinson:six.moves.urllib, r=mukilan

Replace usage of six.moves.urllib with urllib

Also organize some of the imports. Now that Servo only uses Python 3, this module is unnecessary. This is part of the gradual migration to using only Python 3.

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---
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because they do not change behavior.

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1 files changed, 15 insertions, 14 deletions

diff --git a/python/servo/command_base.py b/python/servo/command_base.py
index 7dafcd8c5db..d51e3f6bc8c 100644
--- a/python/servo/command_base.py
+++ b/python/servo/command_base.py
@@ -9,35 +9,36 @@
 
 from __future__ import print_function
 
-from errno import ENOENT as NO_SUCH_FILE_OR_DIRECTORY
-from glob import glob
-import shutil
+import contextlib
+import distro
+import functools
 import gzip
 import itertools
+import json
 import locale
 import os
-from os import path
 import platform
-import distro
 import re
-import contextlib
-import subprocess
-from subprocess import PIPE
+import shutil
 import six
+import subprocess
 import sys
 import tarfile
+import urllib
 import zipfile
-import functools
+
+from errno import ENOENT as NO_SUCH_FILE_OR_DIRECTORY
+from glob import glob
+from os import path
+from subprocess import PIPE
+
+import toml
+
 from xml.etree.ElementTree import XML
 from servo.util import download_file
-import six.moves.urllib as urllib
 from .bootstrap import check_gstreamer_lib
-
 from mach.decorators import CommandArgument
 from mach.registrar import Registrar
-import toml
-import json
-
 from servo.packages import WINDOWS_MSVC as msvc_deps
 from servo.util import host_triple