Remove frame enum

src/examples/test_constraint_AHP.cpp

@@ -21,7 +21,7 @@ int main()
     //=====================================================
 
     // Wolf problem
-    ProblemPtr wolf_problem_ptr_ = Problem::create(FRM_PO_3D);
+    ProblemPtr wolf_problem_ptr_ = Problem::create("PO 3D");
 
     /* Do this while there aren't extrinsic parameters on the yaml */
     Eigen::Vector7s extrinsic_cam;