gnulib: remove mk*temp modules

After commits 4ac47730 and
ef886986, we use the GLib versions
of these functions.

Remove the corresponding gnulib modules.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NPeter Krempa <pkrempa@redhat.com>

bootstrap.conf

@@ -50,9 +50,6 @@ listen
 localeconv
 manywarnings
 mgetgroups
-mkdtemp
-mkostemp
-mkostemps
 net_if
 netdb
 nonblocking