refactor(stm32mp1): remove unused macros

PLAT_STM32MP_NS_IMAGE_OFFSET and PLAT_EMMC_BOOT_SSBL_OFFSET macros should
have been removed with patch [1].

[1] 981b9dcb87 ("refactor(stm32mp1): remove STM32MP_USE_STM32IMAGE")

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Ice98c43c0257041226525199be06134fde8466c5
1 file changed