conkeror: remove package

Conkeror doesn't work with any secure firefox release.
Please move to some of the alternatives suggested at
http://conkeror.org/Alternatives.

pkgs/applications/networking/browsers/conkeror/default.nix

@@ -1,39 +0,0 @@
-{ stdenv, fetchgit, unzip, firefox-esr-52, makeWrapper }:
-
-stdenv.mkDerivation rec {
-  pkgname = "conkeror";
-  version = "1.0.4";
-  name = "${pkgname}-${version}";
-
-  src = fetchgit {
-    url = git://repo.or.cz/conkeror.git;
-    rev = "refs/tags/${version}";
-    sha256 = "10c57wqybp9kcjpkb01wxq0h3vafcdb1g5kb4k8sb2zajg59afv8";
-  };
-
-  buildInputs = [ unzip makeWrapper ];
-
-  installPhase = ''
-    mkdir -p $out/libexec/conkeror
-    cp -r * $out/libexec/conkeror
-
-    makeWrapper ${firefox-esr-52}/bin/firefox $out/bin/conkeror \
-      --add-flags "-app $out/libexec/conkeror/application.ini"
-  '';
-
-  meta = with stdenv.lib; {
-    description = "A keyboard-oriented, customizable, extensible web browser";
-    longDescription = ''
-      Conkeror is a keyboard-oriented, highly-customizable, highly-extensible
-      web browser based on Mozilla XULRunner, written mainly in JavaScript,
-      and inspired by exceptional software such as Emacs and vi. Conkeror
-      features a sophisticated keyboard system, allowing users to run commands
-      and interact with content in powerful and novel ways. It is
-      self-documenting, featuring a powerful interactive help system.
-    '';
-    homepage = http://conkeror.org/;
-    license = with licenses; [ mpl11 gpl2 lgpl21 ];
-    maintainers = with maintainers; [ astsmtl ];
-    platforms = platforms.linux;
-  };
-}

pkgs/top-level/aliases.nix

@@ -123,6 +123,11 @@ mapAliases ({
   firefox-esr-60-unwrapped = firefoxPackages.firefox-esr-60; # 2020-02, remove after 20.03 branchoff
   icecat                   = firefoxPackages.icecat;         # 2020-02, remove after 20.03 branchoff
   icecat-unwrapped         = firefoxPackages.icecat;         # 2020-02, remove after 20.03 branchoff
+  conkeror-unwrapped       = conkeror; # 2020-02, remove after 20.03 branchoff
+  conkeror                 = throw ''
+    Conkeror doesn't work with any secure firefox release.
+    Please move to some of the alternatives at http://conkeror.org/Alternatives
+  ''; # 2020-02, remove after 20.03 branchoff
 
   firestr = throw "firestr has been removed."; # added 2019-12-08
   flameGraph = flamegraph; # added 2018-04-25

pkgs/top-level/all-packages.nix

@@ -18503,9 +18503,6 @@ in
 
   comical = callPackage ../applications/graphics/comical { };
 
-  conkeror-unwrapped = callPackage ../applications/networking/browsers/conkeror { };
-  conkeror = wrapFirefox conkeror-unwrapped { };
-
   containerd = callPackage ../applications/virtualization/containerd { };
 
   convchain = callPackage ../tools/graphics/convchain {};