gnu: Remove rust-rustc-ap-graphviz-654.

* gnu/packages/crates-io.scm (rust-rustc-ap-graphviz-654): Delete variable.

gnu/packages/crates-io.scm

@@ -52302,29 +52302,6 @@ the file-system during development.")
 library.")
     (license license:expat)))
 
-(define-public rust-rustc-ap-graphviz-654
-  (package
-    (name "rust-rustc-ap-graphviz")
-    (version "654.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "rustc-ap-graphviz" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1z8rs3k9zcd1i2clrnzgvfaq1q05m02wjcyy3d9zk9qln03vp43l"))))
-    (build-system cargo-build-system)
-    (home-page "https://github.com/alexcrichton/rustc-auto-publish")
-    (synopsis
-     "Automatically published versions of the graphviz crate used in rustc")
-    (description
-     "Use the graphviz library used in the Rust compiler with this crate.
-It is automatically published using the compiler repository at
-@url{https://www.github.com/rust-lang/rust}")
-    (license (list license:expat license:asl2.0))))
-
 (define-public rust-rustc-ap-rustc-index-654
   (package
     (name "rust-rustc-ap-rustc-index")