gnu: Remove rust-riscv-target-0.1.

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

Change-Id: Ic14cb3bbf0813fba5f0cdcfac0215f20db6c2a2b

gnu/packages/crates-io.scm

@@ -54085,29 +54085,6 @@ MIME Message Headers.")
 First In First Out} ring buffer with direct access to inner data.")
     (license (list license:expat license:asl2.0))))
 
-(define-public rust-riscv-target-0.1
-  (package
-    (name "rust-riscv-target")
-    (version "0.1.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "riscv-target" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "08pj6f1sbddd6idjn8c1wv121bzikw9qvzhcl9icz822va697al8"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-lazy-static" ,rust-lazy-static-1)
-        ("rust-regex" ,rust-regex-1))))
-    (home-page "https://github.com/ilya-epifanov/riscv-target")
-    (synopsis "RISC-V target string manipulation utilities")
-    (description "This package provides RISC-V target string manipulation
-utilities.")
-    (license license:isc)))
-
 (define-public rust-rle-decode-fast-1
   (package
     (name "rust-rle-decode-fast")