release: don't push gem by "rake release"

Because we're using Trusted Publishing.

Author: kou

Rakefile

@@ -5,6 +5,15 @@ task :test do
   ruby("test/run.rb")
 end
 
+release_task = Rake.application["release"]
+release_task.prerequisites.delete("build")
+release_task.prerequisites.delete("release:rubygem_push")
+release_task_comment = release_task.comment
+if release_task_comment
+  release_task.clear_comments
+  release_task.comment = release_task_comment.gsub(/ and build.*$/, "")
+end
+
 namespace :version do
   desc "Bump version"
   task :bump do