Visualizer: hide operation name from result block if it's not necessary
Visualizer: hide operation name from result block if it's not necessary

i.e. there is only one semantic operation, and it has no
argument

harc/ohm,cdglabs/ohm,cdglabs/ohm,coopsource/ohm,harc/ohm,cdglabs/ohm,coopsource/ohm,harc/ohm,coopsource/ohm