Original commit message from CVS:
* gst/gstplugin.h: (GST_PLUGIN_DEFINE_STATIC):
Remove deprecation guards around GST_PLUGIN_DEFINE_STATIC.
This makes gtk-doc complain, but results in slightly better
compiler errors. The old _gst_plugin_register_static() is
still guarded, so there'll be a compiler warning about that
instead. Fixes #510187 too.