gnu: Remove rust-iso8601-0.1.

* gnu/packages/crates-io.scm (rust-iso8601-0.1): Delete variable.

gnu/packages/crates-io.scm

@@ -28238,26 +28238,6 @@ whether or not a given path points to an executable file.")
     (description "Parsing ISO8601 dates using nom.")
     (license license:expat)))
 
-(define-public rust-iso8601-0.1
-  (package
-    (inherit rust-iso8601-0.3)
-    (name "rust-iso8601")
-    (version "0.1.1")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (crate-uri "iso8601" version))
-        (file-name
-         (string-append name "-" version ".tar.gz"))
-        (sha256
-         (base32
-          "0xy48qyfmirslaj4dy6n4g8b564jap3cjiql35fmj5vgii7ldp0i"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-clippy" ,rust-clippy-0.0)
-        ("rust-nom" ,rust-nom-1))))))
-
 (define-public rust-itertools-0.10
   (package
     (name "rust-itertools")