remove _default_group_mode_have_change_in_0_9 in BaseFromrawIO

[samuelgarcia]

remove _default_group_mode_have_change_in_0_9 in BaseFromrawIO

[zm711]

@samuelgarcia,

Does this still matter. Since this is before my time and seems to be 4 years old do we still want this one?

[samuelgarcia]

It was a reminder to remove an old stuff that would be not rellevant in the futur I guess.
Let me check.

[zm711]

Hahah. How is that check coming?

[samuelgarcia]

héhé