[telemetry] Remove archive check in PageSetArchiveInfo.

tools/telemetry/telemetry/page/page_set_archive_info.py

Index: tools/telemetry/telemetry/page/page_set_archive_info.py
diff --git a/tools/telemetry/telemetry/page/page_set_archive_info.py b/tools/telemetry/telemetry/page/page_set_archive_info.py
index 1a6aeafc467861ae477a063e1005944036c7ae1a..aada2a8c8c5942138bfe0cbd05fe6bb12e298695 100644
--- a/tools/telemetry/telemetry/page/page_set_archive_info.py
+++ b/tools/telemetry/telemetry/page/page_set_archive_info.py
@@ -7,7 +7,6 @@ import logging
 import os
 import re
 import shutil
-import sys
 
 from telemetry.page import cloud_storage
 
@@ -27,21 +26,12 @@ class PageSetArchiveInfo(object):
       try:
         cloud_storage.GetIfChanged(archive_path)
       except (cloud_storage.CredentialsError,
-              cloud_storage.PermissionError) as e:
+              cloud_storage.PermissionError):
         if os.path.exists(archive_path):
           # If the archive exists, assume the user recorded their own and
           # simply warn.
-          logging.warning('Could not download WPR archive: %s', archive_path)
-        else:
-          # If the archive doesn't exist, this is fatal.
-          logging.error('Can not run without required WPR archive: %s. '
-                        'If you believe you have credentials, follow the '
-                        'instructions below. If you do not have credentials, '
-                        'you may use record_wpr to make your own recording or '
-                        'run against live sites with --allow-live-sites.',
-                        archive_path)
-          logging.error(e)
-          sys.exit(1)
+          logging.warning('Need credentials to update WPR archive: %s',
+                          archive_path)
 
     # Map from the relative path (as it appears in the metadata file) of the
     # .wpr file to a list of urls it supports.