remove submodule reference to constraints manager

constraints_manager/constraints_manager_example/main.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+#include "constraints_manager.h"
+
+using namespace Eigen;
+
+int main()
+{
+    auto manager = ConstraintsManager(3);
+    auto A1 = MatrixXd::Zero(3,3);
+    auto b1 = VectorXd::Zero(3);
+    auto A2 = MatrixXd::Ones(1,3);
+    auto b2 = VectorXd::Ones(1);
+
+    manager.add_inequality_constraint(A1, b1);
+    manager.add_inequality_constraint(A2, b2);
+
+    MatrixXd A;
+    VectorXd b;
+
+    std::tie(A,b) = manager.get_inequality_constraints();
+    std::cout<<"A: "<<std::endl;
+    std::cout<<A<<std::endl;
+    std::cout<<"b: "<<std::endl;
+    std::cout<<b<<std::endl;
+
+}