Remove noop code

Remove noop code

This commit removes one 2 minutes sleep which seems to be unnecessary
and removes copy-pasted "timeout" code from sdc's docker_run.sh which
also seems to be pointless and broken - the script fails to populate
variable which results in broken docker command and that triggers
pipefail if not disabled and if disabled then it just simply breaks
out of the loop in the first iteration.

Issue-ID: SDC-2558

Signed-off-by: Petr Ospalý <p.ospaly@partner.samsung.com>
Change-Id: I65f92c5fda5b126b8178382fc463c31e67029d5a