gnu: Remove ruby-3.1.

* gnu/packages/ruby.scm (ruby-3.1): Delete variable.

Change-Id: I0f89910de4475644fd802ea93d637d59407cf9da

gnu/packages/ruby.scm

@@ -173,23 +173,6 @@ a focus on simplicity and productivity.")
         (base32
          "0g3s68kcxb24y4h24wvikvk5v3q6l6hs0kjxms9m49sm048d7k0w"))))))
 
-(define-public ruby-3.1
-  (package
-    (inherit ruby-3.2)
-    (version "3.1.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "http://cache.ruby-lang.org/pub/ruby/"
-                           (version-major+minor version)
-                           "/ruby-" version ".tar.xz"))
-       (sha256
-        (base32
-         "0ddhh3nzfnwwb0ks3rsmf3w1m71ban30wf61djn8gnkbbd2wr2k5"))))
-    (inputs
-     (modify-inputs (package-inputs ruby-3.2)
-       (delete "libyaml")))))
-
 (define-public ruby-2.7
   (package
     (name "ruby")