Don't reset open orders in dry-run on restart

tests/test_persistence.py

@@ -1129,56 +1129,6 @@ def test_calc_profit(
     assert pytest.approx(trade.calc_profit_ratio(rate=close_rate)) == round(profit_ratio, 8)
 
 
-@pytest.mark.usefixtures("init_persistence")
-def test_clean_dry_run_db(default_conf, fee):
-
-    # Simulate dry_run entries
-    trade = Trade(
-        pair='ADA/USDT',
-        stake_amount=0.001,
-        amount=123.0,
-        fee_open=fee.return_value,
-        fee_close=fee.return_value,
-        open_rate=0.123,
-        exchange='binance',
-        open_order_id='dry_run_buy_12345'
-    )
-    Trade.query.session.add(trade)
-
-    trade = Trade(
-        pair='ETC/BTC',
-        stake_amount=0.001,
-        amount=123.0,
-        fee_open=fee.return_value,
-        fee_close=fee.return_value,
-        open_rate=0.123,
-        exchange='binance',
-        open_order_id='dry_run_sell_12345'
-    )
-    Trade.query.session.add(trade)
-
-    # Simulate prod entry
-    trade = Trade(
-        pair='ETC/BTC',
-        stake_amount=0.001,
-        amount=123.0,
-        fee_open=fee.return_value,
-        fee_close=fee.return_value,
-        open_rate=0.123,
-        exchange='binance',
-        open_order_id='prod_buy_12345'
-    )
-    Trade.query.session.add(trade)
-
-    # We have 3 entries: 2 dry_run, 1 prod
-    assert len(Trade.query.filter(Trade.open_order_id.isnot(None)).all()) == 3
-
-    clean_dry_run_db()
-
-    # We have now only the prod
-    assert len(Trade.query.filter(Trade.open_order_id.isnot(None)).all()) == 1
-
-
 def test_migrate_new(mocker, default_conf, fee, caplog):
     """
     Test Database migration (starting with new pairformat)