Disable hw_tests on R22, testers are no longer triaging issues here.

BUG=None
TEST=cbuildbot_config_unittests.py

Change-Id: I1c8842caddf43221a017dd47a9084c977c257333
Reviewed-on: https://gerrit.chromium.org/gerrit/36727
Tested-by: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Ben Henry <benhenry@google.com>
Reviewed-by: Jim Hebert <jimhebert@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
diff --git a/buildbot/cbuildbot_config.py b/buildbot/cbuildbot_config.py
index 9a95d79..fa1baf3 100755
--- a/buildbot/cbuildbot_config.py
+++ b/buildbot/cbuildbot_config.py
@@ -842,13 +842,11 @@
 
 _release.add_config('x86-mario-release',
   boards=['x86-mario'],
-  hw_tests=['bvt'],
 )
 
 _config.add_group('x86-alex-release-group',
   _release.add_config('x86-alex-release',
     boards=['x86-alex'],
-    hw_tests=['bvt'],
   ),
   _release.add_config('x86-alex_he-release',
     boards=['x86-alex_he'],
@@ -861,7 +859,6 @@
 _config.add_group('x86-zgb-release-group',
   _release.add_config('x86-zgb-release',
     boards=['x86-zgb'],
-    hw_tests=['bvt'],
   ),
   _release.add_config('x86-zgb_he-release',
     boards=['x86-zgb_he'],
@@ -873,12 +870,10 @@
 
 _release.add_config('stumpy-release',
   boards=['stumpy'],
-  hw_tests=['bvt'],
 )
 
 _release.add_config('lumpy-release',
   boards=['lumpy'],
-  hw_tests=['bvt'],
 )
 
 _release.add_config('link-release',