irssi: drop obsolete configure option

The configure option --with-ncurses has been removed in version 1.0.0
and thus is no longer needed.

Signed-off-by: Rodrigo Rebello <rprebello@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit a97b1e03fe779a67b4ca14f9e08fd4a316e81be5)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/irssi/irssi.mk

@@ -15,7 +15,6 @@ IRSSI_DEPENDENCIES = host-pkgconf libglib2 ncurses openssl
 
 IRSSI_CONF_OPTS = \
 	--disable-glibtest \
-	--with-ncurses=$(STAGING_DIR)/usr \
 	--without-perl
 
 ifeq ($(BR2_PACKAGE_IRSSI_PROXY),y)