x11vnc: cleanup useless config options

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/x11vnc/x11vnc.mk

@@ -8,12 +8,9 @@ X11VNC_SOURCE = x11vnc-$(X11VNC_VERSION).tar.gz
 X11VNC_SITE = http://$(BR2_SOURCEFORGE_MIRROR).dl.sourceforge.net/sourceforge/libvncserver
 X11VNC_INSTALL_STAGING = NO
 X11VNC_INSTALL_TARGET = YES
-#X11VNCINSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install
 
-X11VNC_CONF_OPT = --target=$(GNU_TARGET_NAME) --host=$(GNU_TARGET_NAME) \
-        --build=$(GNU_HOST_NAME) --prefix=/usr \
-        --includedir=/usr/include \
-		--without-avahi
+X11VNC_CONF_OPT = \
+	--without-avahi
 
 X11VNC_DEPENDENCIES = xserver_xorg-server