gnu: Remove rust-nom-2.

* gnu/packages/crates-io.scm (rust-nom-2): Delete variable.

gnu/packages/crates-io.scm

@@ -37021,27 +37021,6 @@ combinators library.")
         ("rust-memchr" ,rust-memchr-1)
         ("rust-regex" ,rust-regex-0.2))))))
 
-(define-public rust-nom-2
-  (package
-    (inherit rust-nom-4)
-    (name "rust-nom")
-    (version "2.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "nom" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1zv6ig7nw532rl4p35jsahglfhyyznjkblwa6si6c0plxhlsflfg"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-lazy-static" ,rust-lazy-static-0.2)
-        ("rust-regex" ,rust-regex-0.2))
-       #:tests? #f))))
-
 (define-public rust-nom-1
   (package
     (inherit rust-nom-4)