removed arg montage from mne.create_info

[FranckPrts]

Remove argument 'montage' from mne.create_info() in hypyp.utils.split()

When running hypyp.utils.split(), python throws the following TypeError:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/var/folders/vv/stc9rswn5c95vxdzpx7z6qqr0000gn/T/ipykernel_72933/3362665754.py in <module>
----> 1 raw_S1, raw_S2 = hypyp.utils.split(raw)

~/opt/anaconda3/lib/python3.8/site-packages/hypyp/utils.py in split(raw_merge)
    233 
    234     # creating info for raws
--> 235     info = mne.create_info(ch, raw_merge.info['sfreq'], ch_types='eeg',
    236                            montage=None, verbose=None)
    237     raw_S1 = mne.io.RawArray(data_S1, info)

TypeError: create_info() got an unexpected keyword argument 'montage'

When verifying the MNE documentation (0.24.1 (current), 0.23.1, 0.22.1, and 0.21.1) for create_info(), no 'montage' argument can be found.

This pull request proposes to remove that argument from the mne.create_info() within hypyp.utils.split().