Remove FakeBackendV2 import deprecated in Qiskit 0.46 (backport #1420) #1422
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### Summary In qiskit 0.46, several classes in the `qiskit.providers.fake_provider` module were deprecated, including `qiskit.providers.fake_provider.fake_backend.FakeBackendV2`. However, the removal PR failed to address this particular class, so while this particular `FakeBackendV2` was no longer part of the public API, the import path would still work. This oversight will be addressed in Qiskit/qiskit#11997, but in order to merge this PR we must make sure that all the downstream libraries covered by `qiskit-neko` are up-to-date with the change. This change adds an alternative import path for this class in qiskit-experiments. It follows the pattern from other 1.0 import deprecations. The removal would roll out in the 1.1 release, but it is indicated as a 1.0 removal because that is when it should have technically taken place. ### Details and comments Blocks Qiskit/qiskit#11997. (cherry picked from commit 428c9bc)
coruscating
approved these changes
Mar 12, 2024
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This is an automatic backport of pull request #1420 done by Mergify.
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