Static plugins are disabled because they need to have unused sections
removed. They are currently 200-500MB in size.

This is because they contain objects for all crate dependencies. Strip
does not remove unused sections because these objects export tens of
thousands of Rust symbols, and the symbol table contains all these,
which marks them as used.

For more information, see the tracker issue for Rust issues:

gstreamer/cerbero#381

Part-of: <gstreamer/cerbero!915>