qiskit/releasenotes/notes/1.0/remove-opflow-qi-utils-3deb...

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---
upgrade_algorithms:
- |
The ``qiskit.opflow`` module has been removed, following its deprecation in
Qiskit 0.44. For more context on the deprecation and
detailed migration instructions, you can read the
`Opflow Migration Guide <https://qisk.it/opflow_migration>`__.
- |
A series of legacy quantum execution utilities have been removed, following their deprecation in Qiskit 0.44.
These include the ``qiskit.utils.QuantumInstance`` class, as well the modules:
- ``qiskit.utils.backend_utils``
- ``qiskit.utils.mitigation``
- ``qiskit.utils.measurement_error_mitigation``
- ``qiskit.utils.run_circuits``
Their functionality has been superseded by the use of primitives. For more context on the deprecation and
detailed migration instructions, you can read the `QuantumInstance Migration Guide <https://qisk.it/qi_migration>`__.