package/x11r7/xserver_xorg-server: remove xfbdev

Upstream removed the kdrive framebuffer device server:
https://cgit.freedesktop.org/xorg/xserver/commit/configure.ac?h=server-1.20-branch&id=feed7e3f982a7ac14f6fe85ed2e1ec4a83700841

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 2779de195f63df89b16d53460d22aec20b495ce1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/x11r7/xserver_xorg-server/xserver_xorg-server.mk

@@ -90,14 +90,9 @@ endif
 ifeq ($(BR2_PACKAGE_XSERVER_XORG_SERVER_KDRIVE),y)
 XSERVER_XORG_SERVER_CONF_OPTS += \
 	--enable-kdrive \
-	--enable-xfbdev \
 	--disable-glx \
 	--disable-dri \
 	--disable-xsdl
-define XSERVER_CREATE_X_SYMLINK
-	ln -f -s Xfbdev $(TARGET_DIR)/usr/bin/X
-endef
-XSERVER_XORG_SERVER_POST_INSTALL_TARGET_HOOKS += XSERVER_CREATE_X_SYMLINK
 
 ifeq ($(BR2_PACKAGE_XSERVER_XORG_SERVER_KDRIVE_EVDEV),y)
 XSERVER_XORG_SERVER_CONF_OPTS += --enable-kdrive-evdev
@@ -106,7 +101,7 @@ XSERVER_XORG_SERVER_CONF_OPTS += --disable-kdrive-evdev
 endif
 
 else # modular
-XSERVER_XORG_SERVER_CONF_OPTS += --disable-kdrive --disable-xfbdev
+XSERVER_XORG_SERVER_CONF_OPTS += --disable-kdrive
 endif
 
 ifeq ($(BR2_PACKAGE_HAS_LIBGL),y)