PURPOSE
=======
It's confusing as it's not used. We had a customer with two exact same rules; he complained to the
support today because Odoo decided to use the other rule. (he was confused because he thought
priorities were based on sequences as there is a sequence field that allow drag & drop)
Order is based on "applied_on, min_quantity desc, categ_id desc", not on sequences. (since v9
and it's better that way; but we forgot to remove the sequence field)
SPECIFICATION
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Remove field