canonicalize_control_flow will be removed in Qiskit 1.0

[kt474]

We use canonicalize_control_flow in our transpiler tests here but it is being removed in Qiskit 1.0 (see Qiskit PR )

Can this be replaced with QuantumCircuit.__eq__?

@taalexander @dieris

[taalexander]

I think we need some input from @jakelishman, this was originally needed to make sure eq evaluated correctly

[jakelishman]

Kevin asked me offline before this - since Qiskit/qiskit#10367, QuantumCircuit.__eq__ should have been doing all the necessary canonicalisation within itself, so (in theory) it should work to remove the explicit call.