Update httpserver_simpletest_manual_ethernet.py

- Use `adafruit_connection_manager`.
- Remove obsolete use of `adafruit_wiznet5k_socket`

Author: dhalbert

examples/httpserver_simpletest_manual_ethernet.py

@@ -4,9 +4,8 @@
 
 import board
 import digitalio
-from adafruit_wiznet5k import adafruit_wiznet5k_socket as socket
+import adafruit_connection_manager
 from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
-
 from adafruit_httpserver import Request, Response, Server
 
 # For Adafruit Ethernet FeatherWing
@@ -20,10 +19,9 @@
 # Initialize ethernet interface with DHCP
 eth = WIZNET5K(spi_bus, cs)
 
-# Set the interface on the socket source
-socket.set_interface(eth)
+pool = adafruit_connection_manager.get_radio_socketpool(eth)
 
-server = Server(socket, "/static", debug=True)
+server = Server(pool, "/static", debug=True)
 
 
 @server.route("/")