update this test to build against current eigen. remove the 'normal' path as it was not compiling anymore and I couldn't see the point of it (?)
update this test to build against current eigen.
remove the 'normal' path as it was not compiling anymore and I couldn't see the point of it (?)

robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen