package/liburiparser: bump to version 0.9.4

- Drop patch (already in version)
- Update hash of COPYING (BSD-3 license fixed with
  https://github.com/uriparser/uriparser/commit/a3e81383591de85c65918a42e68fbe736832f7c1

)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>