MAINTAINERS: ARM FREESCALE IMX: remove invalid path

arch/arm/cpu/armv7/mx*/ does not relate to any existing directory.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index a97c439..6d5e855 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -111,7 +111,6 @@
 T:	git git://git.denx.de/u-boot-imx.git
 F:	arch/arm/cpu/arm1136/mx*/
 F:	arch/arm/cpu/arm926ejs/mx*/
-F:	arch/arm/cpu/armv7/mx*/
 F:	arch/arm/cpu/armv7/vf610/
 F:	arch/arm/mach-imx/
 F:	arch/arm/include/asm/arch-imx/