ARM: defconfig: drop CONFIG_PTP_1588_CLOCK=y

PTP support is now enabled by default for configurations with
ethernet support, so drop the redundant entries in defconfig
files.

Fixes: e5f31552 ("ethernet: fix PTP_1588_CLOCK dependencies")
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/keystone_defconfig

@@ -152,7 +152,6 @@ CONFIG_SPI=y
 CONFIG_SPI_CADENCE_QUADSPI=y
 CONFIG_SPI_DAVINCI=y
 CONFIG_SPI_SPIDEV=y
-CONFIG_PTP_1588_CLOCK=y
 CONFIG_PINCTRL_SINGLE=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_SYSFS=y

arch/arm/configs/multi_v7_defconfig

@@ -462,7 +462,6 @@ CONFIG_SPI_TEGRA20_SLINK=y
 CONFIG_SPI_XILINX=y
 CONFIG_SPI_SPIDEV=y
 CONFIG_SPMI=y
-CONFIG_PTP_1588_CLOCK=y
 CONFIG_PINCTRL_AS3722=y
 CONFIG_PINCTRL_MICROCHIP_SGPIO=y
 CONFIG_PINCTRL_OCELOT=y

arch/arm/configs/omap2plus_defconfig

@@ -428,7 +428,6 @@ CONFIG_SPI_TI_QSPI=m
 CONFIG_HSI=m
 CONFIG_OMAP_SSI=m
 CONFIG_SSI_PROTOCOL=m
-CONFIG_PTP_1588_CLOCK=y
 CONFIG_PINCTRL_SINGLE=y
 CONFIG_DEBUG_GPIO=y
 CONFIG_GPIO_SYSFS=y