ARM: at91: at91_dt_defconfig: : remove ATMEL_TCLIB

ATMEL_TCLIB is not needed anymore due to recent change of TC clock driver.
PWM_ATMEL_TCB was also removed as it depends on ATMEL_TCLIB.

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: cristibirsan

arch/arm/configs/at91_dt_defconfig

@@ -79,7 +79,6 @@ CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=4
 CONFIG_BLK_DEV_RAM_SIZE=8192
-CONFIG_ATMEL_TCLIB=y
 CONFIG_ATMEL_SSC=y
 CONFIG_EEPROM_AT24=y
 CONFIG_SCSI=y
@@ -225,7 +224,6 @@ CONFIG_AT91_SAMA5D2_ADC=y
 CONFIG_PWM=y
 CONFIG_PWM_ATMEL=y
 CONFIG_PWM_ATMEL_HLCDC_PWM=y
-CONFIG_PWM_ATMEL_TCB=y
 CONFIG_EXT4_FS=y
 CONFIG_FANOTIFY=y
 CONFIG_VFAT_FS=y