Revert "Use python executable to drive upload script"

This reverts commit 0a4085acfad532d5fb59a349f37cdaf36e4777cd.

R=sgjesse@google.com

Bug:
Change-Id: Ifd5bf62f339983253b6d1af4979c194aa90e2d4e

tools/test.py

diff --git a/tools/test.py b/tools/test.py
index ba459e7..68fa829 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -112,7 +112,7 @@
     return_code = gradle.RunGradle(gradle_args + ['-Pdex_vm=%s' % art_vm],
                                    throw_on_failure=False)
     if return_code != 0:
-      if options.archive_failures:
+      if options.archive_failures and os.name != 'nt':
         archive_failures()
       return return_code