MAINTAINERS: remove Dmitry Torokhov's alternate address

I am using gmail.com exclusively and mail.ru was a backup that so far was
not needed. To avoid getting 2 copies of the same message let's drop
mail.ru from MAINTAINERS file.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index f73bb41..494901b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4698,7 +4698,6 @@
 
 INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN) DRIVERS
 M:	Dmitry Torokhov <dmitry.torokhov@gmail.com>
-M:	Dmitry Torokhov <dtor@mail.ru>
 L:	linux-input@vger.kernel.org
 Q:	http://patchwork.kernel.org/project/linux-input/list/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git