configs/stm32f469_disco_xip: remove BR2_LINUX_KERNEL_XZ

This is a XIP kernel, so it shouldn't be compressed.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

configs/stm32f469_disco_xip_defconfig

@@ -7,7 +7,6 @@ BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/stmicroelectronics/stm32f469-disco/linux-xip.config"
 BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM=y
-BR2_LINUX_KERNEL_XZ=y
 BR2_LINUX_KERNEL_IMAGE_TARGET_NAME="xipImage"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="stm32f469-disco"