chore: remove unecessary event loop creation in LiveRequstQueue constructor

Before Python 3.10, asyncio.Queue() required a running event loop at creation time. This was deprecated in 3.8-3.9 and fully removed in 3.10. ADK requires Python 3.10+, thus remove this unecessary logic

Co-authored-by: Xiang (Sean) Zhou <seanzhougoogle@google.com>
PiperOrigin-RevId: 852989791

src/google/adk/agents/live_request_queue.py

@@ -45,15 +45,6 @@ class LiveRequestQueue:
   """Queue used to send LiveRequest in a live(bidirectional streaming) way."""
 
   def __init__(self):
-    # Ensure there's an event loop available in this thread
-    try:
-      asyncio.get_running_loop()
-    except RuntimeError:
-      # No running loop, create one
-      loop = asyncio.new_event_loop()
-      asyncio.set_event_loop(loop)
-
-    # Now create the queue (it will use the event loop we just ensured exists)
     self._queue = asyncio.Queue()
 
   def close(self):