qiskit/releasenotes/notes/0.22/remove_optimizers_L_BFGS_B_...

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---
upgrade:
- |
The deprecated arguments ``epsilon`` and ``factr`` for the constructor of
the :class:`~.L_BFGS_B` optimizer class have been removed. These arguments
were originally deprecated as part of the 0.18.0 release (released on
July 12, 2021). Instead the ``ftol`` argument should be used, you
can refer to the `scipy docs <https://docs.scipy.org/doc/scipy/reference/optimize.minimize-lbfgsb.html.>`__
on the optimizer for more detail on the relationship between these arguments.