More work cleaning up the BUILD files

Change-Id: I47fb18e7a12cd7e081631a5369274ef1e25f22c4
diff --git a/y2014/control_loops/drivetrain/BUILD b/y2014/control_loops/drivetrain/BUILD
index 14003b1..274c4f5 100644
--- a/y2014/control_loops/drivetrain/BUILD
+++ b/y2014/control_loops/drivetrain/BUILD
@@ -69,7 +69,7 @@
     'drivetrain_lib_test.cc',
   ],
   deps = [
-    '//third_party/gtest',
+    '//aos/testing:googletest',
     ':drivetrain_queue',
     ':drivetrain_lib',
     '//aos/common/controls:control_loop_test',