fontconfig_210: remove

This isn't used anymore anywhere, and vulnerable to CVE-2016-5384.

pkgs/development/libraries/fontconfig/2.10.nix

@@ -1,47 +0,0 @@
-{ stdenv, fetchurl, pkgconfig, freetype, expat
-}:
-
-stdenv.mkDerivation rec {
-  name = "fontconfig-2.10.2";
-
-  src = fetchurl {
-    url = "http://fontconfig.org/release/${name}.tar.bz2";
-    sha256 = "0llraqw86jmw4vzv7inskp3xxm2gc64my08iwq5mzncgfdbfza4f";
-  };
-
-  outputs = [ "bin" "dev" "lib" "out" ]; # $out contains all the config
-
-  propagatedBuildInputs = [ freetype ];
-  nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ expat ];
-
-  configureFlags = [
-    "--with-arch=${stdenv.hostPlatform.parsed.cpu.name}"
-    "--sysconfdir=/etc"
-    "--with-cache-dir=/var/cache/fontconfig"
-    "--disable-docs"
-    "--with-default-fonts="
-  ] ++ stdenv.lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-    "--with-arch=${stdenv.hostPlatform.parsed.cpu.name}"
-  ];
-
-  enableParallelBuilding = true;
-
-  doCheck = true;
-
-  # Don't try to write to /var/cache/fontconfig at install time.
-  installFlags = [ "sysconfdir=$(out)/etc" "fc_cachedir=$(TMPDIR)/dummy" "RUN_FC_CACHE_TEST=false" ];
-
-  passthru = {
-    # Empty for backward compatibility, there was no versioning before 2.11
-    configVersion = "";
-  };
-
-  meta = with stdenv.lib; {
-    description = "A library for font customization and configuration";
-    homepage = "http://fontconfig.org/";
-    license = licenses.bsd2; # custom but very bsd-like
-    platforms = platforms.all;
-    maintainers = [ maintainers.vcunat ];
-  };
-}

pkgs/top-level/aliases.nix

@@ -138,6 +138,11 @@ mapAliases ({
     fontconfig-ultimate has been removed. The repository has been archived upstream and activity has ceased for several years.
     https://github.com/bohoomil/fontconfig-ultimate/issues/171.
   '';
+  # 2020-07-21
+  fontconfig_210 = throw ''
+    fontconfig 2.10.x hasn't had a release in years, is vulnerable to CVE-2016-5384
+    and has only been used for old fontconfig caches.
+  '';
   font-droid = throw "font-droid has been deprecated by noto-fonts"; # 2019-04-12
   foomatic_filters = foomatic-filters;  # 2016-08
   fuse_exfat = exfat;                   # 2015-09-11

pkgs/top-level/all-packages.nix

@@ -12066,8 +12066,6 @@ in
 
   cfitsio = callPackage ../development/libraries/cfitsio { };
 
-  fontconfig_210 = callPackage ../development/libraries/fontconfig/2.10.nix { };
-
   fontconfig = callPackage ../development/libraries/fontconfig { };
 
   fontconfig-penultimate = callPackage ../data/fonts/fontconfig-penultimate {};