[REF] product, stock_account, etc: remove product.price.history table

This table tracked standard price changes.
It was used to compute the valuation at date in AVCO and standard
through `get_history_price`.

The next commits will introduce the stock valuation layers, separating
the valuation from the stock move. As a valuation layer will be created
when a standard price is updated on the product or when a stock move
impacts the valuation, the information from this table will be
duplicated.

We don't plan to adapt `get_history_price` to work with the valuation
layer since the valuation report at date and today will be the same: a
grouped list on the valuation layers with eventually a domain on the
date.

task-1875873

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