Remove udpsocket_sendto_invalid

It tested parameter checks in the now obsoleted string-based API.

Author: michalpasztamobica

TESTS/netsocket/udp/main.cpp

@@ -191,7 +191,6 @@ Case cases[] = {
     Case("UDPSOCKET_BIND_ADDRESS", UDPSOCKET_BIND_ADDRESS),
     Case("UDPSOCKET_BIND_WRONG_TYPE", UDPSOCKET_BIND_WRONG_TYPE),
     Case("UDPSOCKET_BIND_UNOPENED", UDPSOCKET_BIND_UNOPENED),
-    Case("UDPSOCKET_SENDTO_INVALID", UDPSOCKET_SENDTO_INVALID),
     Case("UDPSOCKET_ECHOTEST_NONBLOCK", UDPSOCKET_ECHOTEST_NONBLOCK),
     Case("UDPSOCKET_ECHOTEST_BURST_NONBLOCK", UDPSOCKET_ECHOTEST_BURST_NONBLOCK),
     Case("UDPSOCKET_SENDTO_REPEAT", UDPSOCKET_SENDTO_REPEAT),