glib-sys: remove the redundant ignore = true line

Author: liushuyu

glib/sys/Gir.toml

@@ -67,7 +67,6 @@ ignore = [
 [[object]]
 name = "GLib.*"
 status = "generate"
-    ignore = true
     [[object.function]]
     pattern = "(fopen|creat|chmod|blow_chunks|utime|slice_debug_tree_statistics|rename|remove|open|mkdir|lstat|fsync|freopen|set_prgname_once)"
     # see https://gitlab.gnome.org/GNOME/glib/-/issues/3231 + majority of those are available through std