giblib: remove unnecessary autoreconf options

The default $(PKG)_AUTORECONF_OPT already includes the -i flag,
so there is no point in specifying this in the package makefile.

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/giblib/giblib.mk

@@ -9,7 +9,6 @@ GIBLIB_SITE = http://linuxbrit.co.uk/downloads/
 GIBLIB_INSTALL_STAGING = YES
 GIBLIB_DEPENDENCIES = imlib2
 GIBLIB_AUTORECONF = YES
-GIBLIB_AUTORECONF_OPT = --install
 GIBLIB_CONF_OPT = --with-imlib2-prefix=$(STAGING_DIR)/usr \
 		  --with-imlib2-exec-prefix=$(STAGING_DIR)/usr
 GIBLIB_CONFIG_SCRIPTS = giblib-config