dev-ruby/rack-test: remove unused patch(es)

Signed-off-by: Michael Mair-Keimberger <mmk@levelnine.at>
Signed-off-by: Hans de Graaff <graaff@gentoo.org>

dev-ruby/rack-test/files/backport-b1084c1-issue-323.patch

@@ -1,29 +0,0 @@
-https://github.com/rack/rack-test/issues/323
-
-From b1084c1f7b04f6bdaad73c9d1ffc1b279af55e78 Mon Sep 17 00:00:00 2001
-From: Jeremy Evans <code@jeremyevans.net>
-Date: Wed, 28 Sep 2022 18:33:43 -0700
-Subject: [PATCH] Make the UploadedFile GC finalizer test more reliable on
- CRuby
-
----
- spec/rack/test/uploaded_file_spec.rb | 6 ++++--
- 1 file changed, 4 insertions(+), 2 deletions(-)
-
-diff --git a/spec/rack/test/uploaded_file_spec.rb b/spec/rack/test/uploaded_file_spec.rb
-index 2cb56ac..67bfbc5 100644
---- a/spec/rack/test/uploaded_file_spec.rb
-+++ b/spec/rack/test/uploaded_file_spec.rb
-@@ -69,8 +69,10 @@ def file_path
-         System.gc
-       end
-     else
--      c.new(file_path)
--      GC.start
-+      50.times do |_i|
-+        c.new(file_path)
-+        GC.start
-+      end
-     end
- 
-     # Due to CRuby's conservative garbage collection, you can never guarantee