MAINTAINERS: Mark Intel PTP DFL ToD as orphaned

This maintainer's email no longer works. Remove it from MAINTAINERS.
Also mark the code as an Orphan.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Tianfei Zhang <tianfei.zhang@intel.com>
Cc: Andrew Lunn <andrew+netdev@lunn.ch>
Link: https://patch.msgid.link/20250808175324.8C4B7354@davehans-spike.ostc.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: hansendc

MAINTAINERS

@@ -12583,10 +12583,9 @@ S:	Supported
 F:	drivers/cpufreq/intel_pstate.c
 
 INTEL PTP DFL ToD DRIVER
-M:	Tianfei Zhang <tianfei.zhang@intel.com>
 L:	linux-fpga@vger.kernel.org
 L:	netdev@vger.kernel.org
-S:	Maintained
+S:	Orphan
 F:	drivers/ptp/ptp_dfl_tod.c
 
 INTEL QUADRATURE ENCODER PERIPHERAL DRIVER