remove .query from most tests

tests/rpc/test_rpc.py

@@ -4,6 +4,7 @@ from unittest.mock import ANY, MagicMock, PropertyMock
 
 import pytest
 from numpy import isnan
+from sqlalchemy import select
 
 from freqtrade.edge import PairInfo
 from freqtrade.enums import SignalDirection, State, TradingMode
@@ -354,7 +355,7 @@ def test_rpc_delete_trade(mocker, default_conf, fee, markets, caplog, is_short):
     with pytest.raises(RPCException, match='invalid argument'):
         rpc._rpc_delete('200')
 
-    trades = Trade.query.all()
+    trades = Trade.session.scalars(select(Trade)).all()
     trades[1].stoploss_order_id = '1234'
     trades[2].stoploss_order_id = '1234'
     assert len(trades) > 2
@@ -717,7 +718,7 @@ def test_rpc_force_exit(default_conf, ticker, fee, mocker) -> None:
     mocker.patch(f'{EXMS}._dry_is_price_crossed', MagicMock(return_value=False))
     freqtradebot.enter_positions()
     # make an limit-buy open trade
-    trade = Trade.query.filter(Trade.id == '3').first()
+    trade = Trade.session.scalars(select(Trade).filter(Trade.id == '3')).first()
     filled_amount = trade.amount / 2
     # Fetch order - it's open first, and closed after cancel_order is called.
     mocker.patch(
@@ -753,7 +754,7 @@ def test_rpc_force_exit(default_conf, ticker, fee, mocker) -> None:
 
     freqtradebot.config['max_open_trades'] = 3
     freqtradebot.enter_positions()
-    trade = Trade.query.filter(Trade.id == '2').first()
+    trade = Trade.session.scalars(select(Trade).filter(Trade.id == '2')).first()
     amount = trade.amount
     # make an limit-buy open trade, if there is no 'filled', don't sell it
     mocker.patch(
@@ -771,7 +772,7 @@ def test_rpc_force_exit(default_conf, ticker, fee, mocker) -> None:
     assert cancel_order_mock.call_count == 2
     assert trade.amount == amount
 
-    trade = Trade.query.filter(Trade.id == '3').first()
+    trade = Trade.session.scalars(select(Trade).filter(Trade.id == '3')).first()
 
     # make an limit-sell open trade
     mocker.patch(