gnu: Remove rust-nom-locate-4.

* gnu/packages/crates-io.scm (rust-nom-locate-4): Delete variable.

gnu/packages/crates-io.scm

@@ -37088,30 +37088,6 @@ (define-public rust-nom-derive-0.7
     (description "This package derives custom nom parsers from structs.")
     (license (list license:expat license:asl2.0))))
 
-(define-public rust-nom-locate-4
-  (package
-    (name "rust-nom-locate")
-    (version "4.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "nom_locate" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "0186n5qbpiyhpas3nk8y4ynnbdghl4nx958bkq4a6a9hr8v48y9p"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-bytecount" ,rust-bytecount-0.6)
-        ("rust-memchr" ,rust-memchr-2)
-        ("rust-nom" ,rust-nom-7)
-        ("rust-stable-deref-trait" ,rust-stable-deref-trait-1))))
-    (home-page "https://github.com/fflorent/nom_locate")
-    (synopsis "Special input type for nom to locate tokens")
-    (description "This crate provides the @code{LocatedSpan} struct that
-encapsulates the data.")
-    (license (list license:expat))))
-
 (define-public rust-noop-proc-macro-0.3
   (package
     (name "rust-noop-proc-macro")