hunspellWithDicts: fix bad `meta.outputsToInstall`

https://github.com/NixOS/nixpkgs/issues/15036#issuecomment-247874297

pkgs/development/libraries/hunspell/wrapper.nix

···
   buildCommand = ''
     makeWrapper ${hunspell.bin}/bin/hunspell $out/bin/hunspell --prefix DICPATH : ${searchPath}
   '';
-  inherit (hunspell) meta;
-}
+  meta = removeAttrs hunspell.meta ["outputsToInstall"];
+}