MAINTAINERS, EDAC: Drop bouncing email

jetztechnologies.com doesn't exist anymore and emails to Ranganathan are
bouncing.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "Arvind R ." <arvino55@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: https://lkml.kernel.org/r/20181120161032.3417-1-alexandre.belloni@bootlin.com

MAINTAINERS

@@ -5330,7 +5330,6 @@ S:	Maintained
 F:	drivers/edac/i82443bxgx_edac.c
 
 EDAC-I82975X
-M:	Ranganathan Desikan <ravi@jetztechnologies.com>
 M:	"Arvind R." <arvino55@gmail.com>
 L:	linux-edac@vger.kernel.org
 S:	Maintained