ARM: omap4: Remove obsolete android usb patform data

New android gadget driver does not need
platform data anymore

Change-Id: Ice38c260b140de7187d3ffc83c83565a4e907d72
Signed-off-by: Benoit Goby <benoit@android.com>

Conflicts:
	arch/arm/mach-omap2/Makefile
	arch/arm/mach-omap2/board-omap4panda.c