MAINTAINERS: Remove FMC subsystem

Cleanup MAINTAINERS from FMC record since the subsystem was removed.

Cc: Pat Riehecky <riehecky@fnal.gov>
Fixes: 6a80b30 ("fmc: Delete the FMC subsystem")
Signed-off-by: Denis Efremov <efremov@linux.com>
Link: https://lore.kernel.org/r/20190813061547.17847-1-efremov@linux.com
Reviewed-by: Federico Vaga <federico.vaga@cern.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

MAINTAINERS

@@ -6326,15 +6326,6 @@ S:	Orphan
 L:	linux-block@vger.kernel.org
 F:	drivers/block/floppy.c
 
-FMC SUBSYSTEM
-M:	Alessandro Rubini <rubini@gnudd.com>
-W:	http://www.ohwr.org/projects/fmc-bus
-S:	Supported
-F:	drivers/fmc/
-F:	include/linux/fmc*.h
-F:	include/linux/ipmi-fru.h
-K:	fmc_d.*register
-
 FPGA MANAGER FRAMEWORK
 M:	Moritz Fischer <mdf@kernel.org>
 L:	linux-fpga@vger.kernel.org