Remove async streaming ticks recipe.

docs/recipes.rst

@@ -192,41 +192,6 @@ the data that has not been sent yet.
     ib.disconnect()
 
 
-Async streaming ticks
-^^^^^^^^^^^^^^^^^^^^^
-
-.. code-block:: python
-
-    import asyncio
-
-    import ib_insync as ibi
-
-
-    class App:
-
-        async def run(self):
-            self.ib = ibi.IB()
-            with await self.ib.connectAsync():
-                contracts = [
-                    ibi.Stock(symbol, 'SMART', 'USD')
-                    for symbol in ['AAPL', 'TSLA', 'AMD', 'INTC']]
-                for contract in contracts:
-                    self.ib.reqMktData(contract)
-
-                async for tickers in self.ib.pendingTickersEvent:
-                    for ticker in tickers:
-                        print(ticker)
-
-        def stop(self):
-            self.ib.disconnect()
-
-
-    app = App()
-    try:
-        asyncio.run(app.run())
-    except (KeyboardInterrupt, SystemExit):
-        app.stop()
-
 Integration with PyQt5 or PySide2
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^