Clear last turn's procurement requests each turn.

Without this, *this turn's* urgent requests are lower priority than last
turn's stretch goals. The requests are remade every turn so we lose
nothing by removing this.

Bug was introduced by f69450e2ae, so this
doesn't affect 2.5.

game/game.py

@@ -404,6 +404,9 @@ class Game:
         self.compute_transit_networks()
         self.ground_planners = {}
 
+        self.blue_procurement_requests.clear()
+        self.red_procurement_requests.clear()
+
         self.transfers.order_airlift_assets()
         self.transfers.plan_transports()
 
@@ -438,7 +441,7 @@ class Game:
             manage_front_line=self.settings.automate_front_line_reinforcements,
             manage_aircraft=self.settings.automate_aircraft_reinforcements,
             front_line_budget_share=ground_portion,
-        ).spend_budget(self.budget, self.blue_procurement_requests)
+        ).spend_budget(self.budget)
 
         self.enemy_budget = ProcurementAi(
             self,
@@ -448,7 +451,7 @@ class Game:
             manage_front_line=True,
             manage_aircraft=True,
             front_line_budget_share=ground_portion,
-        ).spend_budget(self.enemy_budget, self.red_procurement_requests)
+        ).spend_budget(self.enemy_budget)
 
     def message(self, text: str) -> None:
         self.informations.append(Information(text, turn=self.turn))

game/procurement.py

@@ -58,9 +58,7 @@ class ProcurementAi:
         self.front_line_budget_share = front_line_budget_share
         self.threat_zones = self.game.threat_zone_for(not self.is_player)
 
-    def spend_budget(
-        self, budget: float, aircraft_requests: List[AircraftProcurementRequest]
-    ) -> float:
+    def spend_budget(self, budget: float) -> float:
         if self.manage_runways:
             budget = self.repair_runways(budget)
         if self.manage_front_line: