oniro-linux.conf: Drop x11 distro feature

Oniro is based on wayland for the graphics stack. There is no testing
nor support for x11 so let's drop it in the distro's default
configuration.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

meta-oniro-core/conf/distro/oniro-linux.conf

@@ -65,7 +65,7 @@ TCLIBC ?= "musl"
 INIT_MANAGER = "systemd"
 
 # Remove some of the default Poky DISTRO_FEATURES we inherited, but do not use.
-DISTRO_FEATURES:remove = " nfs nfc 3g pcmcia"
+DISTRO_FEATURES:remove = " nfs nfc 3g pcmcia x11"
 
 # Remove some of the default Poky IMAGE_FEATURES we inherited, but do not need.
 IMAGE_FEATURES:remove = " nfs-server nfs-client nfs-utils"