delivery_usability: Move code from stock_packaging_usability_pp to delivery_usability

I don't use stock_packaging_usability_pp from OCA/stock-logistics-tracking because the feature is native since v11 (I didn't figure it out when I ported stock_packaging_usability_ul from v10 to v14 under the new name stock_packaging_usability_ul
I also improved the code to clean it up and use the native field for measured weight

delivery_usability/models/stock_move.py

@@ -0,0 +1,23 @@
+# Copyright 2019 Akretion France (http://www.akretion.com)
+# @author Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+
+from odoo import api, models
+
+
+class StockMove(models.Model):
+    _inherit = "stock.move"
+
+    # Fixing bug https://github.com/odoo/odoo/issues/34702
+    @api.depends("product_id", "product_uom_qty", "product_uom")
+    def _cal_move_weight(self):
+        weight_uom_categ = self.env.ref("uom.product_uom_categ_kgm")
+        kg_uom = self.env.ref("uom.product_uom_kgm")
+        for move in self:
+            if move.product_id.uom_id.category_id == weight_uom_categ:
+                move.weight = move.product_id.uom_id._compute_quantity(
+                    move.product_qty, kg_uom
+                )
+            else:
+                move.weight = move.product_qty * move.product_id.weight