nghttp2 cleanup: unneeded patching, unused inputs

Suggested on
https://github.com/NixOS/nixpkgs/pull/21029#issuecomment-266290756

pkgs/development/libraries/nghttp2/default.nix

@@ -1,8 +1,8 @@
 { stdenv, fetchurl, pkgconfig
 
 # Optional Dependencies
-, openssl ? null, libev ? null, zlib ? null, jansson ? null, boost ? null
-, libxml2 ? null, jemalloc ? null
+, openssl ? null, libev ? null, zlib ? null
+#, jansson ? null, boost ? null, libxml2 ? null, jemalloc ? null
 }:
 
 stdenv.mkDerivation rec {
@@ -15,12 +15,6 @@ stdenv.mkDerivation rec {
     sha256 = "7685b6717d205d3a251b7dd5e73a7ca5e643bc5c01f928b82bfeed30c243f28a";
   };
 
-  # Configure script searches for a symbol which does not exist in jemalloc on Darwin
-  # Reported upstream in https://github.com/tatsuhiro-t/nghttp2/issues/233
-  postPatch = if stdenv.isDarwin && jemalloc != null then ''
-    substituteInPlace configure --replace "malloc_stats_print" "je_malloc_stats_print"
-  '' else null;
-
   outputs = [ "out" "dev" "lib" ];
 
   nativeBuildInputs = [ pkgconfig ];