qiskit/releasenotes/notes/0.20/remove-deprecated-algo-meth...

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---
upgrade:
- |
The previously deprecated methods:
* ``qiskit.algorithms.VQE.get_optimal_cost``
* ``qiskit.algorithms.VQE.get_optimal_circuit``
* ``qiskit.algorithms.VQE.get_optimal_vector``
* ``qiskit.algorithms.VQE.optimal_params``
* ``qiskit.algorithms.HamiltonianPhaseEstimationResult.most_likely_phase``
* ``qiskit.algorithms.PhaseEstimationResult.most_likely_phase``
which were originally deprecated in the Qiskit Terra 0.18.0 release have
been removed and will no longer work.
- |
The :class:`qiskit.algorithms.VariationalAlgorithm` class is now defined
as an abstract base class (``ABC``) which will require classes that inherit
from it to define both a :attr:`.VariationalAlgorithm.initial_point` getter
and setter method.