ARM: multi_v7_defconfig: remove unnecessary CONFIG_GPIOLIB

Commit 38669e04 ("ARM: vexpress: Start
using new Versatile Express infrastructure") introduces a hard
dependency to GPIOLIB for the multi_v7_defconfig:

   ARCH_MULTI_V7 -> ARCH_VEXPRESS -> ARCH_REQUIRE_GPIOLIB -> GPIOLIB

Remove unnecessary explicit CONFIG_GPIOLIB=y from multi_v7_defconfig.
Signed-off-by: NJosh Cartwright <josh.cartwright@ni.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

arch/arm/configs/multi_v7_defconfig

@@ -39,7 +39,6 @@ CONFIG_I2C=y
 CONFIG_I2C_DESIGNWARE_PLATFORM=y
 CONFIG_SPI=y
 CONFIG_SPI_PL022=y
-CONFIG_GPIOLIB=y
 CONFIG_FB=y
 CONFIG_FB_ARMCLCD=y
 CONFIG_FRAMEBUFFER_CONSOLE=y