ptp: MAINTAINERS: drop Jeff Sipek

Emails to Jeff Sipek bounce:

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Signed-off-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: krzk

MAINTAINERS

@@ -23661,7 +23661,6 @@ F:	drivers/scsi/vmw_pvscsi.c
 F:	drivers/scsi/vmw_pvscsi.h
 
 VMWARE VIRTUAL PTP CLOCK DRIVER
-M:	Jeff Sipek <[email protected]>
 R:	Ajay Kaher <[email protected]>
 R:	Alexey Makhalov <[email protected]>
 R:	VMware PV-Drivers Reviewers <[email protected]>