gnu: Remove ruby-chandler.

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

gnu/packages/ruby.scm

@@ -7926,29 +7926,6 @@ follows Ruby conventions and requires little knowledge of REST.")
     (home-page "https://github.com/octokit/octokit.rb")
     (license license:expat)))
 
-(define-public ruby-chandler
-  (package
-    (name "ruby-chandler")
-    (version "0.9.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (rubygems-uri "chandler" version))
-       (sha256
-        (base32
-         "1n8a4mr2jkcz5vaaps45g2rxa2pzy1wb7cylgw85xmmyyp14lnrr"))))
-    (build-system ruby-build-system)
-    (native-inputs
-     (list ruby-rubocop))
-    (propagated-inputs
-     (list ruby-netrc ruby-octokit))
-    (synopsis "Sync CHANGELOG entries to GitHub's release notes")
-    (description "Chandler syncs a project's CHANGELOG file entries to
-GitHub's release notes to remove the need of manually entering release
-notes.")
-    (home-page "https://github.com/mattbrictson/chandler")
-    (license license:expat)))
-
 (define-public ruby-pry-byebug
   (package
     (name "ruby-pry-byebug")