fixed copy elision error in clang 3.8

Change-Id: I31f95667c309c80ade1289f0923e261e51bfa3a1
diff --git a/y2015/autonomous/auto.cc b/y2015/autonomous/auto.cc
index 4df613d..2a1a7c2 100644
--- a/y2015/autonomous/auto.cc
+++ b/y2015/autonomous/auto.cc
@@ -166,7 +166,7 @@
       distance - theta * constants::GetValues().turn_width / 2.0;
   right_initial_position +=
       distance + theta * constants::GetValues().turn_width / 2.0;
-  return ::std::move(drivetrain_action);
+  return drivetrain_action;
 }
 
 const ProfileParams kFridgeYProfile{1.0, 4.0};