gnu: Remove rust-temporary-0.6.

* gnu/packages/crates-io.scm (rust-temporary-0.6): Delete variable.

gnu/packages/crates-io.scm

@@ -60522,28 +60522,6 @@ directories.")
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-temporary-0.6
-  (package
-    (name "rust-temporary")
-    (version "0.6.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "temporary" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "1z0vg6yb54xlb5aapdwga57s5xbcvgzw2n21m2zv7flx8b4dsd5n"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-random" ,rust-random-0.12))))
-    (home-page "https://github.com/stainless-steel/temporary")
-    (synopsis "Temporary files and directories")
-    (description
-     "The package provides means of managing temporary files and directories.")
-    (license (list license:asl2.0 license:expat))))
-
 (define-public rust-tendril-0.4
   (package
     (name "rust-tendril")