overlays: remove hugin

overlays/default.nix

@@ -1,3 +1,2 @@
 {
-  hugin = import ./hugin;
 }

overlays/hugin/default.nix

@@ -1,34 +0,0 @@
-final: prev: {
-  # hugin needs glew-egl since wxGTK30 upgrade:
-  # https://bugs.archlinux.org/task/75406
-  hugin = prev.hugin.overrideAttrs (oldAttrs: {
-    buildInputs = with final; [
-      boost
-      cairo
-      exiv2
-      fftw
-      flann
-      gettext
-      glew
-      ilmbase
-      lcms2
-      lensfun
-      libjpeg
-      libpng
-      libtiff
-      xorg.libX11
-      xorg.libXi
-      xorg.libXmu
-      libGLU
-      libGL
-      openexr
-      panotools
-      sqlite
-      vigra
-      (wxGTK31.override {
-        withEGL = false;
-      })
-      zlib
-    ];
-  });
-}