ARROW-3718: [Gandiva] Remove spurious gtest include

pcmoritz · pcmoritz · commit df4eb302f3bf · 2018-11-07T22:32:49.000-08:00
Author: Philipp Moritz <pcmoritz@gmail.com> Closes apache#2917 from pcmoritz/gandiva-remove-gtest and squashes the following commits: 210362f <Philipp Moritz> remove gtest include from gandiva
diff --git a/cpp/src/gandiva/expr_decomposer.h b/cpp/src/gandiva/expr_decomposer.h
@@ -23,7 +23,6 @@
 #include <string>
 #include <utility>
 
-#include <gtest/gtest_prod.h>
 #include "gandiva/arrow.h"
 #include "gandiva/expression.h"
 #include "gandiva/node.h"
