Remove test suite for asyncio, *not* py-libp2p

tests/network/test_connection.py

@@ -1,27 +0,0 @@
-import asyncio
-
-import pytest
-
-
-async def handle_echo(reader, writer):
-    data = await reader.read(100)
-    writer.write(data)
-    await writer.drain()
-    writer.close()
-
-
-@pytest.mark.asyncio
-# TODO: this test should develop out into a fuller test between MPlex
-# modules communicating with each other.
-async def test_simple_echo():
-    server_ip = "127.0.0.1"
-    server_port = 8888
-    await asyncio.start_server(handle_echo, server_ip, server_port)
-
-    reader, writer = await asyncio.open_connection(server_ip, server_port)
-
-    test_message = "hello world"
-    writer.write(test_message.encode())
-    response = (await reader.read()).decode()
-
-    assert response == (test_message)