gnu: Remove rust-cmac-0.5.

* gnu/packages/crates-io.scm (rust-cmac-0.5): Delete variable.

gnu/packages/crates-io.scm

@@ -11179,31 +11179,6 @@ contains all syscalls and related types.")
        #:cargo-inputs
        (("rust-cc" ,rust-cc-1))))))
 
-(define-public rust-cmac-0.5
-  (package
-    (name "rust-cmac")
-    (version "0.5.1")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (crate-uri "cmac" version))
-        (file-name
-          (string-append name "-" version ".tar.gz"))
-        (sha256
-          (base32 "0wj2kd4lb5hb7dvxfad4hi8gklmbq8vvvcnzmmqgxr94fx7xxm3k"))))
-    (build-system cargo-build-system)
-    (arguments
-      `(#:skip-build? #t
-        #:cargo-inputs
-        (("rust-crypto-mac" ,rust-crypto-mac-0.10)
-         ("rust-dbl" ,rust-dbl-0.3))))
-    (home-page "https://docs.rs/cmac/")
-    (synopsis "Generic implementation of Cipher-based Message Authentication
-Code")
-    (description "This package provides a pure Rust implementation of the
-Cipher-based Message Authentication Code (CMAC).")
-    (license (list license:expat license:asl2.0))))  ; at your choice
-
 (define-public rust-cmake-0.1
   (package
     (name "rust-cmake")