Removes unnecessary includes

Removes unnecessary includes from SymmetricICP.h and SymmetricICP.cpp, cleaning up the code and reducing compile times.

Author: eclipse0922

cpp/open3d/pipelines/registration/SymmetricICP.h

@@ -7,9 +7,6 @@
 
 #pragma once
 
-#include <Eigen/Core>
-#include <memory>
-
 #include "open3d/pipelines/registration/Registration.h"
 #include "open3d/pipelines/registration/RobustKernel.h"
 #include "open3d/pipelines/registration/TransformationEstimation.h"

cpp/tests/pipelines/registration/SymmetricICP.cpp

@@ -7,8 +7,6 @@
 
 #include "open3d/pipelines/registration/SymmetricICP.h"
 
-#include <random>
-
 #include "open3d/geometry/PointCloud.h"
 #include "open3d/pipelines/registration/Registration.h"
 #include "open3d/utility/Eigen.h"