Remove extra dependencies from custom_services example

Author: Matevz Morato

examples/python/Visualizer/custom_services.py

@@ -3,46 +3,6 @@
 import signal
 import sys
 import time
-import asyncio
-import json
-import websockets
-import struct
-
-uri = "ws://localhost:8765"
-async def call_service(ws, service_name, service_id):
-    # Call a service and return the response payload
-    msg = bytearray([0x02])  # opcode
-    msg.extend(struct.pack('<I', service_id))
-    msg.extend(struct.pack('<I', 1))  # call_id
-    msg.extend(struct.pack('<I', 4))  # encoding length
-    msg.extend(b"json")
-    msg.extend(b"{}")
-    await ws.send(bytes(msg))
-    
-    response = await asyncio.wait_for(ws.recv(), timeout=5.0)
-    if isinstance(response, bytes) and response[0] == 0x03:
-        encoding_len = struct.unpack('<I', response[9:13])[0]
-        payload = response[13 + encoding_len:]
-        return payload.decode('utf-8')
-    return None
-
-async def test_available_services():
-    async with websockets.connect(uri, subprotocols=["foxglove.websocket.v1"]) as ws:
-        while True:
-            msg = json.loads(await asyncio.wait_for(ws.recv(), timeout=5.0))
-            if msg.get("op") == "advertiseServices":
-                services = {s['name']: s['id'] for s in msg.get("services", [])}
-                print(f"Available services: {list(services.keys())}")
-                break
-        
-        # Test each service
-        for service_name in services:
-            try:
-                result = await call_service(ws, service_name, services[service_name])
-                print(f"{service_name}: {result}")
-            except Exception as e:
-                print(f"{service_name}: ERROR - {e}")
-
 
 isRunning = True
 def stop():
@@ -65,4 +25,3 @@ def testService(input):
 remoteConnection.registerService("myService", testService)
 while isRunning:
     time.sleep(1)
-    asyncio.run(test_available_services())