gnu: Remove rust-countme-2.

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

gnu/packages/crates-io.scm

@@ -12946,27 +12946,6 @@ intrinsics.")
      "This package provides a counts the number of live instances of types.")
     (license (list license:expat license:asl2.0))))
 
-(define-public rust-countme-2
-  (package
-    (inherit rust-countme-3)
-    (name "rust-countme")
-    (version "2.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "countme" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0n6bzg2g6gsmgabyzbcfkyb9y9mzxsvavng85d04wkdsvhmq52rj"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-dashmap" ,rust-dashmap-4)
-        ("rust-once-cell" ,rust-once-cell-1)
-        ("rust-rustc-hash" ,rust-rustc-hash-1))))))
-
 (define-public rust-cpp-demangle-0.3
   (package
     (name "rust-cpp-demangle")