`plot_scanner_LORs.py` is broken

I am not sure why these lines are added but there removal allows the script to run.

STIR/examples/python/plot_scanner_LORs.py

Lines 84 to 87 in 250da05

    
           #%% Plot 2D XY LORs for segment, axial position and tangential position =0 
        
           b1=stir.FloatCartesianCoordinate3D; 
        
           b2=stir.FloatCartesianCoordinate3D; 
        
           lor=stir.FloatLORInAxialAndNoArcCorrSinogramCoordinates;

	#%% Plot 2D XY LORs for segment, axial position and tangential position =0
	b1=stir.FloatCartesianCoordinate3D;
	b2=stir.FloatCartesianCoordinate3D;
	lor=stir.FloatLORInAxialAndNoArcCorrSinogramCoordinates;