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