ccnx: remove

upstream has been replaced by another project, doesn't build with
openssl 1.1 and is not used elsewhere in nixpkgs

See https://github.com/ProjectCCNx/ccnx

pkgs/development/libraries/ccnx/default.nix

@@ -1,38 +0,0 @@
-{ stdenv, fetchurl, openssl, expat, libpcap }:
-let
-  version = "0.8.2";
-in
-stdenv.mkDerivation {
-  name = "ccnx-${version}";
-  src = fetchurl {
-    url = "https://github.com/ProjectCCNx/ccnx/archive/ccnx-${version}.tar.gz";
-    sha256 = "1jyk7i8529821aassxbvzlxnvl5ly0na1qcn3v1jpxhdd0qqpg00";
-  };
-  buildInputs = [ openssl expat libpcap ];
-  preConfigure = ''
-    mkdir -p $out/include
-    mkdir -p $out/lib
-    mkdir -p $out/bin
-    substituteInPlace csrc/configure --replace "/usr/local" $out --replace "/usr/bin/env sh" "/bin/sh"
-  '';
-  meta = with stdenv.lib; {
-    homepage = http://www.ccnx.org/;
-    description = "A Named Data Neworking (NDN) or Content Centric Networking (CCN) abstraction";
-    longDescription = ''
-      To address the Internet’s modern-day requirements with a better
-      fitting model, PARC has created a new networking architecture
-      called Content-Centric Networking (CCN), which operates by addressing
-      and delivering Content Objects directly by Name instead of merely
-      addressing network end-points. In addition, the CCN security model
-      explicitly secures individual Content Objects rather than securing
-      the connection or “pipe”. Named and secured content resides in
-      distributed caches automatically populated on demand or selectively
-      pre-populated. When requested by name, CCN delivers named content to
-      the user from the nearest cache, thereby traversing fewer network hops,
-      eliminating redundant requests, and consuming less resources overall.
-    '';
-    license = licenses.gpl2;
-    platforms = stdenv.lib.platforms.unix;
-    maintainers = [ maintainers.sjmackenzie ];
-  };
-}

pkgs/top-level/all-packages.nix

@@ -7529,8 +7529,6 @@ with pkgs;
 
   capnproto = callPackage ../development/libraries/capnproto { };
 
-  ccnx = callPackage ../development/libraries/ccnx { };
-
   ndn-cxx = callPackage ../development/libraries/ndn-cxx { };
 
   cddlib = callPackage ../development/libraries/cddlib {};