dev-cpp/catch: remove unused patch

Signed-off-by: Michael Mair-Keimberger <mmk@levelnine.at>
Signed-off-by: Joonas Niilola <juippis@gentoo.org>

dev-cpp/catch/files/catch-2.13.8-musl-tests.patch

@@ -1,24 +0,0 @@
-From 3e88ccff3ba573fb6d1ab746596411eebe310a6b Mon Sep 17 00:00:00 2001
-From: John Zimmermann <me@johnnynator.dev>
-Date: Thu, 31 Dec 2020 16:24:16 +0100
-Subject: [PATCH] Do not match exact amount of spaces for errno macro expansion
- in approvalTests.py
-
-E.g. musl libc expands errno() to __errno_location() without a space between, glibc has 1 space.
----
- scripts/approvalTests.py | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/scripts/approvalTests.py b/scripts/approvalTests.py
-index f8b9425c7c..73e9b83239 100755
---- a/scripts/approvalTests.py
-+++ b/scripts/approvalTests.py
-@@ -44,7 +44,7 @@
- 
- # errno macro expands into various names depending on platform, so we need to fix them up as well
- errnoParser = re.compile(r'''
--    \(\*__errno_location\ \(\)\)
-+    \(\*__errno_location\s*\(\)\)
-     |
-     \(\*__error\(\)\)
-     |