Bulk edited shebang line

Bug: None
Test: These changes only modify comments.
Change-Id: I8ddc9685dad93886ba29f715c586d26e382df57b
diff --git a/acts/tests/google/bt/car_bt/BtCarHfpTest.py b/acts/tests/google/bt/car_bt/BtCarHfpTest.py
index b883753..2fc6260 100644
--- a/acts/tests/google/bt/car_bt/BtCarHfpTest.py
+++ b/acts/tests/google/bt/car_bt/BtCarHfpTest.py
@@ -1,4 +1,4 @@
-#/usr/bin/env python3.4
+#!/usr/bin/env python3
 #
 # Copyright (C) 2016 The Android Open Source Project
 #