iprutils: drop unneeded ncurses5-config handling

ncurses nowadays installs the headers directly into $prefix/usr/include, so
ncurses5-config doesn't return anything important and the logic wasn't
taking the wchar variant into consideration - So just drop it.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/iprutils/iprutils.mk

@@ -13,7 +13,7 @@ IPRUTILS_LICENSE_FILES = LICENSE
 
 define IPRUTILS_BUILD_CMDS
 	$(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(@D) \
-		INCLUDEDIR="-I. $(shell $(STAGING_DIR)/usr/bin/ncurses5-config --cflags)" all
+		INCLUDEDIR="-I." all
 endef
 
 define IPRUTILS_INSTALL_TARGET_CMDS