MAINTAINERS: remove file entry in NFC SUBSYSTEM after platform_data movement

Commit 053fdaa8 ("nfc: mrvl: Move platform_data struct into driver")
moves the nfcmrvl.h header file from include/linux/platform_data to the
driver's directory, but misses to adjust MAINTAINERS.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference.

Just remove the file entry in NFC SUBSYSTEM, as the new location of the
code is already covered by another pattern in that section.

Fixes: 053fdaa8 ("nfc: mrvl: Move platform_data struct into driver")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>