nuvoton-ma35d1: drop ATF_USE_GCC

- no longer needed/useful/real

Author: rpardini

config/sources/families/nuvoton-ma35d1.conf

@@ -28,7 +28,6 @@ declare -g BOOTDIR='u-boot-nuvoton-ma35d1'
 declare -g UBOOT_TARGET_MAP=";;u-boot.bin header.bin fip.bin bl2.bin bl31.bin bl2-ma35d1.dtb tee-header_v2.bin tee-pager_v2.bin"
 
 # TF-A source from Nuvoton
-declare -g ATF_USE_GCC="> 8.0"
 declare -g ATFSOURCE="https://github.com/OpenNuvoton/MA35D1_arm-trusted-firmware-v2.3.git"
 declare -g ATFDIR="arm-trusted-firmware-ma35d1"
 declare -g ATFBRANCH="branch:master"