Missing/import of not needed tau_id_channel_selection

[a-monsch]

Upon creating controlplots in mt channel, the following Error occurs:

from config.shapes.channel_selection import channel_selection, tau_id_channel_selection
ImportError: cannot import name 'tau_id_channel_selection' from 'config.shapes.channel_selection'

@conformist89 is this a typo from previous commits, or is this function required? From your commit (9ffe20f) it is only used here but the function itself seems to not appear anywhere in main here/your fork.

Can you add this function if it is somewhere locally or quickly clarify if it can be discarded?

Thanks in advance