download_creds: punt

The bucket/project this tries to copy from is being deleted.
Drop this code to clean up some chromite usage.

BUG=chromium:1049711
TEST=CQ passes

Change-Id: I23acc876720088601d377912ad1e93f585de42bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2042359
Reviewed-by: Xixuan Wu <xixuan@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/utils/download_creds.py b/utils/download_creds.py
deleted file mode 100755
index 6328811..0000000
--- a/utils/download_creds.py
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/usr/bin/python2
-
-"""
-Fetch credentials used by lab tools from Google storage.
-
-Usage?  Just run it.
-    utils/download_creds.py
-"""
-
-import os
-import sys
-
-import common
-from chromite.lib import gs
-from chromite.lib import osutils
-
-from autotest_lib.utils import external_packages
-
-
-CRED_DIR = 'creds'
-RUN_SUITE_SERVICE_ACCOUNT = (
-        'gs://chromeos-proxy.appspot.com/skylab-trampoline.json')
-
-def _fetch_run_suite_creds(ctx, creds_dir):
-    """Download creds for labtools run_suites.
-
-    Args:
-      ctx: A gs.GSContext object.
-      creds_dir: A string path.
-    """
-    cred_file = os.path.join(creds_dir,
-                             'skylab_trampoline_service_account.json')
-    ctx.Copy(RUN_SUITE_SERVICE_ACCOUNT, cred_file)
-
-
-def main():
-    """Download credentials."""
-    autotest_dir = external_packages.find_top_of_autotest_tree()
-    creds_dir = os.path.join(autotest_dir, CRED_DIR)
-    osutils.SafeMakedirs(creds_dir)
-    ctx = gs.GSContext()
-    _fetch_run_suite_creds(ctx, creds_dir)
-
-
-if __name__ == '__main__':
-    sys.exit(main())