ctdb-scripts: Drop TCP tuning comments from statd_callout_helper

ctdb-scripts: Drop TCP tuning comments from statd_callout_helper

Commits caad5dc38d790d76f6720b312c1557ec3151a084 and
f022df1d40c9c1e3e528f178204f404ee395d5c2 commented out these lines
back in 2007.

2 things are clear from the commit messages:

* These setting should not be required in the real world - they are:

    mainly useful for avoiding ack-storms when doing very rapid
    failover/failback during testing

* If they are needed, they are not specific to
  statd_callout/statd_callout_helper

Let's remove these comments to avoid confusing people.

Reported-by: Ulrich Sibiller <ulrich.sibiller@eviden.com>
Signed-off-by: Martin Schwenke <mschwenke@ddn.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>