Revert of [Android] Add a configurable environment for devil/.

build/android/devil/android/logcat_monitor_test.py

Index: build/android/devil/android/logcat_monitor_test.py
diff --git a/build/android/devil/android/logcat_monitor_test.py b/build/android/devil/android/logcat_monitor_test.py
index 7a49c5dbc555700ca07add8b90962d51989a9c32..2b7969c4e745cae26f859ac75672082f656c3650 100755
--- a/build/android/devil/android/logcat_monitor_test.py
+++ b/build/android/devil/android/logcat_monitor_test.py
@@ -6,14 +6,16 @@
 # pylint: disable=protected-access
 
 import itertools
+import os
 import sys
 import unittest
 
-from devil import devil_env
 from devil.android import logcat_monitor
 from devil.android.sdk import adb_wrapper
+from pylib import constants
 
-sys.path.append(devil_env.config.pymock_path)
+sys.path.append(os.path.join(
+    constants.DIR_SOURCE_ROOT, 'third_party', 'pymock'))
 import mock # pylint: disable=F0401