spidermonkey_52: drop, as is unused

`gnome-shell-extensions` switched over to `spidermonkey_60` in 3.34 leaving
`spidermonkey_52` unused.

pkgs/development/interpreters/spidermonkey/52.nix

@@ -1,82 +0,0 @@
-{ stdenv, fetchurl, fetchpatch, autoconf213, pkgconfig, perl, zip, which, readline, icu, zlib, nspr, buildPackages }:
-
-let
-  version = "52.9.0";
-in stdenv.mkDerivation {
-  pname = "spidermonkey";
-  inherit version;
-
-  src = fetchurl {
-    url = "mirror://mozilla/firefox/releases/${version}esr/source/firefox-${version}esr.source.tar.xz";
-    sha256 = "1mlx34fgh1kaqamrkl5isf0npch3mm6s4lz3jsjb7hakiijhj7f0";
-  };
-
-  outputs = [ "out" "dev" ];
-  setOutputFlags = false; # Configure script only understands --includedir
-
-  buildInputs = [ readline icu zlib nspr ];
-  nativeBuildInputs = [ autoconf213 pkgconfig perl which buildPackages.python2 zip ];
-
-  # Apparently this package fails to build correctly with modern compilers, which at least
-  # on ARMv6 causes polkit testsuite to break with an assertion failure in spidermonkey.
-  # These flags were stolen from:
-  # https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/js52
-  NIX_CFLAGS_COMPILE = "-fno-delete-null-pointer-checks -fno-strict-aliasing -fno-tree-vrp";
-
-  patches = [
-    # needed to build gnome3.gjs
-    (fetchpatch {
-      name = "mozjs52-disable-mozglue.patch";
-      url = https://git.archlinux.org/svntogit/packages.git/plain/trunk/mozjs52-disable-mozglue.patch?h=packages/js52&id=4279d2e18d9a44f6375f584911f63d13de7704be;
-      sha256 = "18wkss0agdyff107p5lfflk72qiz350xqw2yqc353alkx4fsfpz0";
-    })
-  ];
-
-  configurePlatforms = [ ];
-
-  preConfigure = ''
-    export CXXFLAGS="-fpermissive"
-    export LIBXUL_DIST=$out
-    export PYTHON="${buildPackages.python2.interpreter}"
-    configureFlagsArray+=("--includedir=$dev/include")
-
-    cd js/src
-
-    autoconf
-  '';
-
-  configureFlags = [
-    "--with-nspr-prefix=${nspr}"
-    "--with-system-zlib"
-    "--with-system-icu"
-    "--with-intl-api"
-    "--enable-readline"
-    "--enable-shared-js"
-  ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "--disable-jemalloc"
-    ++ stdenv.lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-    "--host=${stdenv.buildPlatform.config}"
-    "--target=${stdenv.hostPlatform.config}"
-  ];
-
-  makeFlags = [
-    "HOST_CC=${buildPackages.stdenv.cc}/bin/cc"
-  ];
-
-  depsBuildBuild = [ buildPackages.stdenv.cc ];
-
-  enableParallelBuilding = true;
-
-  postInstall = ''
-    moveToOutput bin/js52-config "$dev"
-    # Nuke a static lib.
-    rm $out/lib/libjs_static.ajs
-  '';
-
-  meta = with stdenv.lib; {
-    description = "Mozilla's JavaScript engine written in C/C++";
-    homepage = https://developer.mozilla.org/en/SpiderMonkey;
-    license = licenses.gpl2; # TODO: MPL/GPL/LGPL tri-license.
-    maintainers = [ maintainers.abbradar ];
-    platforms = platforms.linux;
-  };
-}

pkgs/top-level/aliases.nix

@@ -344,6 +344,7 @@ mapAliases ({
   speedtest_cli = speedtest-cli;  # added 2015-02-17
   spice_gtk = spice-gtk; # added 2018-02-25
   spice_protocol = spice-protocol; # added 2018-02-25
+  spidermonkey_52 = throw "spidermonkey_52 has been removed. Please use spidermonkey_60 instead."; # added 2019-10-16
   sqlite3_analyzer = sqlite-analyzer; # added 2018-05-22
   sqliteInteractive = sqlite-interactive;  # added 2014-12-06
   squid4 = squid;  # added 2019-08-22

pkgs/top-level/all-packages.nix

@@ -9034,7 +9034,6 @@ in
   } // (stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
       stdenv = gcc6Stdenv; # with gcc-7: undefined reference to `__divmoddi4'
   }));
-  spidermonkey_52 = callPackage ../development/interpreters/spidermonkey/52.nix { };
   spidermonkey_60 = callPackage ../development/interpreters/spidermonkey/60.nix { };
   spidermonkey = spidermonkey_38;