omap: remove I2C from SPL

Due to some recent changes I2C is no longer required in SPL.
Remove the i2c_init() call to save some space

Signed-off-by: Aneesh V <aneesh@ti.com>

arch/arm/cpu/armv7/omap-common/spl.c

@@ -115,7 +115,6 @@ void board_init_r(gd_t *id, ulong dummy)
 			CONFIG_SYS_SPL_MALLOC_SIZE);
 
 	timer_init();
-	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 
 	boot_device = omap_boot_device();
 	debug("boot device - %d\n", boot_device);