qiskit/releasenotes/notes/0.45/remove-deprecated-bip-mappe...

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---
upgrade:
- |
The deprecated transpiler routing pass, ``BIPMapping`` has been removed.
It was marked as deprecated in the Qiskit 0.43.0 release. It has been
replaced by an external plugin package: ``qiskit-bip-mapper``. Details for
this new package can be found at the package's github repository:
https://github.com/qiskit-community/qiskit-bip-mapper
The pass was made into a separate plugin package for two reasons, first
the dependency on CPLEX makes it harder to use and secondly the plugin
package more cleanly integrates with :func:`~.transpile`. The optional
extra ``bip-mapper`` to install the ``cplex`` and ``docplex`` to support
this pass has been removed as nothing in Qiskit optionally requires it anymore.