emacs-packages: Drop stgit

Use autogenerated modules from melpa instead

pkgs/applications/editors/emacs-modes/melpa-packages.nix

@@ -148,9 +148,6 @@ env NIXPKGS_ALLOW_BROKEN=1 nix-instantiate --show-trace ../../../../ -A emacsPac
         # upstream issue: missing file header
         speech-tagger = markBroken super.speech-tagger;
 
-        # upstream issue: missing file header
-        stgit = markBroken super.stgit;
-
         shm = super.shm.overrideAttrs (attrs: {
           propagatedUserEnvPkgs = [ external.structured-haskell-mode ];
         });

pkgs/applications/editors/emacs-modes/stgit/default.nix

@@ -1,25 +0,0 @@
-{ stdenv, fetchurl }:
-
-stdenv.mkDerivation rec {
-  pname = "stgit";
-  name = "${pname}-2009-10-28";
-
-  dontUnpack = true;
-
-  src = fetchurl {
-    url = "https://raw.githubusercontent.com/miracle2k/stgit/master/contrib/stgit.el";
-    sha256 = "0pl8q480633vdkylr85s7cbd4653xpzwklnxrwm8xhsnvw9d501q";
-    name = "stgit.el";
-  };
-
-  installPhase = ''
-    mkdir -p $out/share/emacs/site-lisp
-    cp $src $out/share/emacs/site-lisp/stgit.el
-  '';
-
-  meta = {
-    description = "An emacs mode for Stgit";
-    homepage = http://procode.org/stgit/;
-    platforms = stdenv.lib.platforms.all;
-  };
-}

pkgs/top-level/emacs-packages.nix

@@ -403,8 +403,6 @@ let
       };
     };
 
-    stgit = callPackage ../applications/editors/emacs-modes/stgit { };
-
     structured-haskell-mode = self.shm;
 
     thingatpt-plus = callPackage ../applications/editors/emacs-modes/thingatpt-plus { };