This reverts commit 15394aa70543f55c54fa8a474805224f4138f76c. The latest release (v1.1) does not have pkg-config support yet, so this plugin won't be built with the latest release. Cerbero uses the latest release, so this makes cerbero builds fail, which expect the plugin to be built. We can re-commit this once there's a release that includes pkg-config support.