OpTestRTCdriver: Remove hwclock_compare function as it no longer supports.
OpTestRTCdriver: Remove hwclock_compare function as it no
longer supports.

Below commit removes the option from hwclock.

commit 92931ab28d2f9174b884b4373d6cdd1e0ef350d4
Author: Sami Kerola <kerolasa@iki.fi>
Date:   Tue Jan 10 21:16:20 2017 +0000

    hwclock: remove --compare option

    Compare functionality was printing nonsense values.  There is no knowledge
    of anyone using this broken functionality.  Instead of deprecating the code
    for months, and removing it after few release, it is removed immediately.
    Needless to say this is unusual removal.

    Reference: http://marc.info/?l=util-linux-ng&m=148396210506652&w=2
    Signed-off-by: Karel Zak <kzak@redhat.com>
    Signed-off-by: Sami Kerola <kerolasa@iki.fi>

Signed-off-by: Pridhiviraj Paidipeddi <fd8ea14509c256cbd04eaa4ee745a213945e70a1@linux.vnet.ibm.com>

open-power/op-test-framework,open-power/op-test-framework,open-power/op-test-framework