stm32f7: remove duplicate configs

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
diff --git a/configs/stm32f746-disco_defconfig b/configs/stm32f746-disco_defconfig
index 4322aad..a334d50 100644
--- a/configs/stm32f746-disco_defconfig
+++ b/configs/stm32f746-disco_defconfig
@@ -44,10 +44,6 @@
 CONFIG_STM32_QSPI=y
 CONFIG_OF_LIBFDT_OVERLAY=y
 # CONFIG_EFI_LOADER is not set
-CONFIG_CLK=y
-CONFIG_PINCTRL=y
-# CONFIG_PINCTRL_FULL is not set
-CONFIG_PINCTRL_STM32=y
 CONFIG_RAM=y
 CONFIG_STM32_SDRAM=y
 CONFIG_DM_GPIO=y