DEPR: Remove old deprecation

Author: kernc

backtesting/backtesting.py

@@ -312,7 +312,7 @@ def position(self) -> 'Position':
     @property
     def orders(self) -> 'Tuple[Order, ...]':
         """List of orders (see `Order`) waiting for execution."""
-        return _Orders(self._broker.orders)
+        return tuple(self._broker.orders)
 
     @property
     def trades(self) -> 'Tuple[Trade, ...]':
@@ -325,27 +325,6 @@ def closed_trades(self) -> 'Tuple[Trade, ...]':
         return tuple(self._broker.closed_trades)
 
 
-class _Orders(tuple):
-    """
-    TODO: remove this class. Only for deprecation.
-    """
-    def cancel(self):
-        """Cancel all non-contingent (i.e. SL/TP) orders."""
-        for order in self:
-            if not order.is_contingent:
-                order.cancel()
-
-    def __getattr__(self, item):
-        # TODO: Warn on deprecations from the previous version. Remove in the next.
-        removed_attrs = ('entry', 'set_entry', 'is_long', 'is_short',
-                         'sl', 'tp', 'set_sl', 'set_tp')
-        if item in removed_attrs:
-            raise AttributeError(f'Strategy.orders.{"/.".join(removed_attrs)} were removed in'
-                                 'Backtesting 0.2.0. '
-                                 'Use `Order` API instead. See docs.')
-        raise AttributeError(f"'tuple' object has no attribute {item!r}")
-
-
 class Position:
     """
     Currently held asset position, available as