c/d/oniro-linux-blueprint-flutter.conf: Tweaks needed for flutter

- build without video (ffmpeg API differ)
- RW filesystem

Could be reverted later

Signed-off-by: Philippe Coval <philippe.coval@huawei.com>

conf/distro/oniro-linux-blueprint-flutter.conf

@@ -9,4 +9,10 @@ require conf/distro/oniro-linux.conf
 DISTRO = "oniro-linux-blueprint-flutter"
 DISTRO_NAME = "Oniro Project Flutter Blueprint Linux Distro"
 
-DISTRO_FEATURES:append = " wayland"
+LICENSE_FLAGS_ACCEPTED:append = "commercial"
+
+PACKAGECONFIG:remove = "gstreamer"
+
+# TODO: Check if  image is enough
+IMAGE_FEATURES:remove = "read-only-rootfs"
+ROOT_FSTYPE = "ext4"