bind: drop a darwin-specific patch (#62882)

The patch didn't apply since 9.12 -> 9.14 (26026c3e1a).
I'll hope it's not needed anymore (and let Borg verify that).
It was reportedly just a configure-time error: e4602677.

pkgs/servers/dns/bind/default.nix

@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   patches = [
     ./dont-keep-configure-flags.patch
     ./remove-mkdir-var.patch
-  ] ++ stdenv.lib.optional stdenv.isDarwin ./darwin-openssl-linking-fix.patch;
+  ];
 
   nativeBuildInputs = [ perl ];
   buildInputs = [ libtool libxml2 openssl ]