[Android] Don't use a device blacklist if one isn't provided. (RELAND)

build/android/devil/android/device_utils.py

Index: build/android/devil/android/device_utils.py
diff --git a/build/android/devil/android/device_utils.py b/build/android/devil/android/device_utils.py
index 5be914cdbdaae803747c576581a672ff53416aed..c318b69928c28fd3e47ca038b26b5f8b29e0ac99 100644
--- a/build/android/devil/android/device_utils.py
+++ b/build/android/devil/android/device_utils.py
@@ -25,7 +25,6 @@ from devil.utils import cmd_helper
 from devil.android import apk_helper
 from devil.android import device_signal
 from devil.android import decorators
-from devil.android import device_blacklist
 from devil.android import device_errors
 from devil.android import device_temp_file
 from devil.android import logcat_monitor
@@ -1932,11 +1931,7 @@ class DeviceUtils(object):
 
   @classmethod
   def HealthyDevices(cls, blacklist=None, **kwargs):
-    if not blacklist:
-      # TODO(jbudorick): Remove once clients pass in the blacklist.
-      blacklist = device_blacklist.Blacklist(device_blacklist.BLACKLIST_JSON)
-
-    blacklisted_devices = blacklist.Read()
+    blacklisted_devices = blacklist.Read() if blacklist else []
     def blacklisted(adb):
       if adb.GetDeviceSerial() in blacklisted_devices:
         logging.warning('Device %s is blacklisted.', adb.GetDeviceSerial())