ethernet lib: remove wiznet stuff

Author: leonardocavagnis

libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino

@@ -2,9 +2,7 @@
   Repeating Web client
 
  This sketch connects to a a web server and makes a request
- using a Wiznet Ethernet shield. You can use the Arduino Ethernet shield, or
- the Adafruit Ethernet shield, either one will work, as long as it's got
- a Wiznet Ethernet module on board.
+ using the Ethernet interface.
 
  This example uses DNS, by assigning the Ethernet client with a MAC address,
  IP address, and DNS address.