libressl_3_4: drop unsupported package

LibreSSL 3.4 has been unsupported for a long time, but we couldn't drop
it because some packages still depended on it. A quick 'git grep' shows
that this is no longer the case now, we can finally remove it.

This fixes https://github.com/NixOS/nixpkgs/issues/216207.

pkgs/development/libraries/libressl/default.nix

@@ -91,22 +91,6 @@ let
   };
 
 in {
-  libressl_3_4 = generic {
-    version = "3.4.3";
-    hash = "sha256-/4i//jVIGLPM9UXjyv5FTFAxx6dyFwdPUzJx1jw38I0=";
-    knownVulnerabilities = [ "Support ended 2022-10-14." ];
-    patches = [
-      (fetchpatch {
-        # https://marc.info/?l=libressl&m=167582148932407&w=2
-        name = "backport-type-confusion-fix.patch";
-        url = "https://raw.githubusercontent.com/libressl/portable/30dc760ed1d7c70766b135500950d8ca9d17b13a/patches/x509_genn.c.diff";
-        sha256 = "sha256-N9jsOueqposDWZwaR+n/v/cHgNiZbZ644d8/wKjN2/M=";
-        stripLen = 2;
-        extraPrefix = "crypto/";
-      })
-    ];
-  };
-
   libressl_3_6 = generic {
     version = "3.6.2";
     hash = "sha256-S+gP/wc3Rs9QtKjlur4nlayumMaxMqngJRm0Rd+/0DM=";

pkgs/top-level/all-packages.nix

@@ -23626,7 +23626,6 @@ with pkgs;
   };
 
   inherit (callPackages ../development/libraries/libressl { })
-    libressl_3_4
     libressl_3_6
     libressl_3_7;