MAINTAINERS: Remove non-existing NFC platform data files

There are no longer platform data files for NFC drivers.
Remove it from MAINTAINERS data base.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

MAINTAINERS

@@ -9069,8 +9069,6 @@ F:	include/uapi/linux/nfc.h
 F:	drivers/nfc/
 F:	include/linux/platform_data/nfcmrvl.h
 F:	include/linux/platform_data/nxp-nci.h
-F:	include/linux/platform_data/pn544.h
-F:	include/linux/platform_data/st21nfca.h
 F:	Documentation/devicetree/bindings/net/nfc/
 
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