[FIX] purchase,stock_dropshipping: keep current company currency

Changing it is not needed and generated missmatch against existing
entries (created by l10n_generic_coa demo data, thus depending on module
install order).

addons/purchase/test/fifo_price.yml

@@ -1,9 +1,3 @@
--
-  Set the company currency as EURO for the sake of repeatibility
--
-  !python {model: res.company}: |
-    company = self.env.ref('base.main_company')
-    self.env.cr.execute("UPDATE res_company SET currency_id = %s WHERE id = %s", [self.env.ref("base.EUR").id, company.id])
 -
   Set a product as using fifo price
 -
@@ -369,4 +363,4 @@
     original_out_move._fifo_vacuum()
     outgoing_shipment_fifo_icecream_neg2._fifo_vacuum()
     assert original_out_move.product_id.stock_value == 12000.0, 'Stock Value should be 12000'
-    assert original_out_move.product_id.qty_available == 150.0, 'Qty available should be 150'
+    assert original_out_move.product_id.qty_available == 150.0, 'Qty available should be 150'

addons/stock_dropshipping/test/lifo_price.yml

@@ -1,9 +1,3 @@
--
-  Set the company currency as EURO for the sake of repeatibility
--
-   !python {model: res.company, id: base.main_company}: |
-    self.env.cr.execute("UPDATE res_company SET currency_id = %s WHERE id = %s", [self.env.ref("base.EUR").id, self.id])
-
 - 
   Set product category removal strategy as LIFO 
 -