Revert of Logdog for logcats

build/android/pylib/local/device/local_device_environment.py

Index: build/android/pylib/local/device/local_device_environment.py
diff --git a/build/android/pylib/local/device/local_device_environment.py b/build/android/pylib/local/device/local_device_environment.py
index 9faf0f7111f9a953919947e705b4f36b04f4d440..431614377efa68bd4cffecc6158f13d0d6673965 100644
--- a/build/android/pylib/local/device/local_device_environment.py
+++ b/build/android/pylib/local/device/local_device_environment.py
@@ -188,17 +188,8 @@
       try:
         m.Stop()
         m.Close()
-        _, temp_path = tempfile.mkstemp()
-        with open(m.output_file, 'r') as infile:
-          with open(temp_path, 'w') as outfile:
-            for line in infile:
-              outfile.write('Device(%s) %s' % (m.adb.GetDeviceSerial(), line))
-        shutil.move(temp_path, m.output_file)
       except base_error.BaseError:
         logging.exception('Failed to stop logcat monitor for %s',
-                          m.adb.GetDeviceSerial())
-      except IOError:
-        logging.exception('Failed to locate logcat for device %s',
                           m.adb.GetDeviceSerial())
 
     if self._logcat_output_file: