dev-ml/dune-private-libs: remove unused patch(es)

Signed-off-by: Michael Mair-Keimberger <mm1ke@gentoo.org>

dev-ml/dune-private-libs/files/dune-private-libs-2.9.3-test.patch

@@ -1,32 +0,0 @@
-From 4a8fa5757277be6e9bbd3698fd4d4336dadae520 Mon Sep 17 00:00:00 2001
-From: Rudi Grinberg <me@rgrinberg.com>
-Date: Sat, 26 Jun 2021 21:54:55 -0700
-Subject: [PATCH] Fix test bug_4219.t
-
-It was missing EOF end markers
-
-Signed-off-by: Rudi Grinberg <me@rgrinberg.com>
----
- otherlibs/site/test/bug_4219.t | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/otherlibs/site/test/bug_4219.t b/otherlibs/site/test/bug_4219.t
-index 96d4794f43..eab868d676 100644
---- a/otherlibs/site/test/bug_4219.t
-+++ b/otherlibs/site/test/bug_4219.t
-@@ -7,6 +7,7 @@ Test when sites name which are ocaml keyword
-   > (package
-   >  (name my-package)
-   >  (sites (lib include)))
-+  > EOF
- 
-   $ cat >dune <<EOF
-   > (library (name lib) (libraries dune-site dune-site.plugins))
-@@ -14,6 +15,6 @@ Test when sites name which are ocaml keyword
-   > (generate_sites_module
-   >  (module sites)
-   >  (plugins (my-package include)))
--
-+  > EOF
- 
-   $ dune build