Unused waveform_kwargs warning with MB likelihood and bilby_pipe

Using the MBGravitationalWaveTransient likelihood with bilby_pipe and the current bilby master (a1952512201f6692dc84ec84d09efca96911d87b) results in a warning at every waveform evaluation e.g.

Unused waveform_kwargs: {'minimum_frequency': 5.0, 'maximum_frequency': 3584.0}

18:36 bilby WARNING : There are unused waveform kwargs. This is deprecated behavior and will
result in an error in future releases. Make sure all of the waveform kwargs are correctly
spelled.

While minimum_frequency and maximum_frequency are not used by _base_waveform_frequency_sequence, they are set automatically when using bilby_pipe, and are not removed from the waveform_kwargs here.

I attach an example config for bilby_pipe to reproduce the error.