network/perf_lan: remove the test

There are several reasons to remove it:

* Test does what 'ping -p' command can do (can be added to tcp_cmds/ping);
* It needs cleanup/fixing and IPv6 version is disabled right now;
* ck_packet() is wrongly setting data buffer pointer, assuming that
  the sender added timestamp but it didn't. Actually timestamp was
  removed in the packet sending code but not in the receiving one
  (patch ef77253);
* Also test always passes, even if packet data is not correct, because
  ck_packet() always returns 0, so it doesn't really check packets.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Acked-by: Cyril Hrubis <chrubis@suse.cz>
7 files changed