MAINTAINERS: remove arch/arm/mach-mx*/ from IMX entry

With commit 784a90c0a7d8f5 ("ARM i.MX: Merge i.MX5 support into
mach-imx") merging mach-mx5 into mach-imx, arch/arm/mach-mx* only
covers mach-mxs now.  Since we already have a separate MXS entry
for arch/arm/mach-mxs, arch/arm/mach-mx* can simply be removed there.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>

MAINTAINERS

@@ -784,7 +784,6 @@ M:	Sascha Hauer <kernel@pengutronix.de>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 T:	git git://git.pengutronix.de/git/imx/linux-2.6.git
-F:	arch/arm/mach-mx*/
 F:	arch/arm/mach-imx/
 F:	arch/arm/plat-mxc/