diff --git a/cartographer/pose_graph/constraint/rotation_constraint_3d_test.cc b/cartographer/pose_graph/constraint/rotation_constraint_3d_test.cc
index 1cc8e5d..6ef6388 100644
--- a/cartographer/pose_graph/constraint/rotation_constraint_3d_test.cc
+++ b/cartographer/pose_graph/constraint/rotation_constraint_3d_test.cc
@@ -22,14 +22,9 @@ namespace cartographer {
 namespace pose_graph {
 namespace {
 
-using ::testing::ElementsAre;
 using testing::EqualsProto;
-using testing::Near;
 using testing::ParseProto;
 
-using RotationType = std::array<double, 4>;
-using ResidualType = std::array<double, 3>;
-
 constexpr char kConstraint[] = R"PROTO(
   id: "narf"
   cost_function {