Fix path to root in low_bandwidth_audio_test.py

BUG=chromium:611808
TBR=solenberg@webrtc.org
NOTRY=True
NOPRESUBMIT=True
NOTREECHECKS=True

Change-Id: Iba2b0851ee99916b9809231b4b27046315fd8565
Reviewed-on: https://webrtc-review.googlesource.com/1569
Commit-Queue: Henrik Kjellander <kjellander@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19849}
diff --git a/audio/test/low_bandwidth_audio_test.py b/audio/test/low_bandwidth_audio_test.py
index abe9da9..93da7db 100755
--- a/audio/test/low_bandwidth_audio_test.py
+++ b/audio/test/low_bandwidth_audio_test.py
@@ -25,8 +25,7 @@
 
 
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
-SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir,
-                                        os.pardir))
+SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir))
 
 
 def _LogCommand(command):