Revert "hv: utils: add PTP_1588_CLOCK to Kconfig to fix build"

This reverts commit c4dc584a.

On Sat, Apr 09, 2022 at 09:07:51AM -0700, Randy Dunlap wrote:
>According to https://bugzilla.kernel.org/show_bug.cgi?id=215823

,
>c4dc584a ("hv: utils: add PTP_1588_CLOCK to Kconfig to fix build")
>is a problem for 5.10 since CONFIG_PTP_1588_CLOCK_OPTIONAL does not exist in 5.10.
>This prevents the hyper-V NIC timestamping from working, so please revert that commit.

Signed-off-by: Sasha Levin <sashal@kernel.org>