gnu: Remove rust-gix-discover-0.19.

* gnu/packages/crates-vcs.scm (rust-gix-discover-0.19): Delete variable.

Change-Id: I4e618481663dc498b3bdbef94fa119c6cfb137f2

gnu/packages/crates-vcs.scm

@@ -2734,33 +2734,6 @@ This package is part of Gitoxide, a pure Rust implementation of Git.")
         ("rust-serial-test" ,rust-serial-test-2)
         ("rust-tempfile" ,rust-tempfile-3))))))
 
-(define-public rust-gix-discover-0.19
-  (package
-    (inherit rust-gix-discover-0.25)
-    (name "rust-gix-discover")
-    (version "0.19.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "gix-discover" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "0ijg43psf0ijg0z7g0wwsh94c0058gg77pl1apkfzcpjs70cdadb"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-bstr" ,rust-bstr-1)
-        ("rust-dunce" ,rust-dunce-1)
-        ("rust-gix-hash" ,rust-gix-hash-0.11)
-        ("rust-gix-path" ,rust-gix-path-0.8)
-        ("rust-gix-ref" ,rust-gix-ref-0.30)
-        ("rust-gix-sec" ,rust-gix-sec-0.8)
-        ("rust-thiserror" ,rust-thiserror-1))
-       #:cargo-development-inputs
-       (("rust-defer" ,rust-defer-0.1)
-        ("rust-is-ci" ,rust-is-ci-1)
-        ("rust-serial-test" ,rust-serial-test-2)
-        ("rust-tempfile" ,rust-tempfile-3))))))
-
 (define-public rust-gix-features-0.38
   (package
     (name "rust-gix-features")