configs: omap3_logic: Remove USB Storage and enable CONFIG_BLK

With the pending requirement for CONFIG_BLK, this patch removes
the USB_STORAGE option which assumes that DM_USB is enabled, but isn't
yet available for the omap2340 musb glue among other issues.  Once
the USB issues are resolved, a future patch can enable them again.

Signed-off-by: Adam Ford <aford173@gmail.com>

configs/omap3_logic_defconfig

@@ -30,7 +30,6 @@ CONFIG_SPL_OF_CONTROL=y
 CONFIG_SPL_OF_PLATDATA=y
 # CONFIG_ENV_IS_IN_FAT is not set
 CONFIG_ENV_IS_IN_NAND=y
-# CONFIG_BLK is not set
 CONFIG_USB_FUNCTION_FASTBOOT=y
 CONFIG_FASTBOOT_BUF_ADDR=0x82000000
 CONFIG_DM_I2C=y
@@ -56,7 +55,6 @@ CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_MUSB_OMAP2PLUS=y
 CONFIG_TWL4030_USB=y
-CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_MANUFACTURER="TI"
 CONFIG_USB_GADGET_VENDOR_NUM=0x0451