remove !libtool

PKGBUILD

@@ -8,7 +8,6 @@ pkgdesc="Japanese Kana Kanji conversion library"
 arch=('i686' 'x86_64')
 url="https://bitbucket.org/libkkc"
 license=('GPL')
-options=(!libtool)
 depends=('marisa' 'json-glib' 'libgee06')
 makedepends=('vala' 'gobject-introspection' 'intltool' 'python2-marisa')
 optdepends=('sh: to use kkc-package-data')