arm: omap4: panda: remove usb_nop_xceiv_register(v1)

Panda uses both twl6030 otg phy(vbus, id) and internal
phy(data lines, DP/DM), so removes usb_nop_xceiv_register to make
twl6030 otg driver working since current otg code only supports
one global transceiver. Otherwise, musb doesn't work without
the remove.
Reviewd-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-omap4panda.c

@@ -409,8 +409,6 @@ static void __init omap4_panda_init(void)
 	platform_add_devices(panda_devices, ARRAY_SIZE(panda_devices));
 	omap_serial_init();
 	omap4_twl6030_hsmmc_init(mmc);
-	/* OMAP4 Panda uses internal transceiver so register nop transceiver */
-	usb_nop_xceiv_register();
 	omap4_ehci_init();
 	usb_musb_init(&musb_board_data);
 }