Re-enable hackernews telemetry test on linux.

tools/perf/page_sets/system_health/browsing_stories.py

Index: tools/perf/page_sets/system_health/browsing_stories.py
diff --git a/tools/perf/page_sets/system_health/browsing_stories.py b/tools/perf/page_sets/system_health/browsing_stories.py
index fcc725a2fb9d21baef9dd083ed58641e421fdfec..41e68a61c03a5162bd1838be3c3b9be411fd4040 100644
--- a/tools/perf/page_sets/system_health/browsing_stories.py
+++ b/tools/perf/page_sets/system_health/browsing_stories.py
@@ -138,8 +138,8 @@ class FlipboardDesktopStory(_NewsBrowsingStory):
   SUPPORTED_PLATFORMS = platforms.DESKTOP_ONLY
 
 
-# crbug.com/657665 for win and mac, crbug.com/665007 for linux
-@decorators.Disabled('win', 'linux', 'yosemite', 'elcapitan')
+# crbug.com/657665 for win and mac
+@decorators.Disabled('win', 'yosemite', 'elcapitan')
 class HackerNewsStory(_NewsBrowsingStory):
   NAME = 'browse:news:hackernews'
   URL = 'https://news.ycombinator.com'