dino: remove unnecessary private transitive deps

As explained by Orivej (reformatted from Markdown):

> These (except libsignal-protocol-c) are private dependencies of the
> actual dependencies that should neither be propagated nor added
> manually to dino. For example, libpsl and brotli come from
> libsoup-2.4.pc:
>
>     Requires: glib-2.0 >=  2.38, gobject-2.0 >=  2.38, gio-2.0 >=  2.38
>     Requires.private: libxml-2.0, sqlite3, libpsl >=  0.20, libbrotlidec, zlib
>
> (To be precise, glib uses utillinuxMinimal rather than utillinux.)
>
> The warnings we see, such as Package 'mount', required by 'gio-2.0',
> not found, come from CMake running both pkg-config --libs and
> pkg-config --static --libs to populate both <XXX>_LIBRARIES and
> <XXX>_STATIC_LIBRARIES[1], but dino has no use for the latter.
> Currently these warnings can not be disabled:
> https://gitlab.kitware.com/cmake/cmake/issues/18158
>
> (They could be prevented by pruning Requires.private from shared-only
> libraries akin to <https://github.com/NixOS/nixpkgs/pull/51767>,
> although it can not be detected if a library is shared-only from the
> .pc file alone, and this is just a warning.)
>
> [1]: docs: https://cmake.org/cmake/help/v3.16/module/FindPkgConfig.html

pkgs/applications/networking/instant-messengers/dino/default.nix

@@ -2,7 +2,7 @@
 , vala, cmake, ninja, wrapGAppsHook, pkgconfig, gettext
 , gobject-introspection, gnome3, glib, gdk-pixbuf, gtk3, glib-networking
 , xorg, libXdmcp, libxkbcommon
-, libnotify, libsoup, libgee, utillinux, libselinux, libsepol, libpsl, brotli
+, libnotify, libsoup, libgee
 , librsvg, libsignal-protocol-c
 , libgcrypt
 , epoxy
@@ -52,18 +52,12 @@ stdenv.mkDerivation rec {
     pcre
     xorg.libxcb
     xorg.libpthreadstubs
-    xorg.libXtst
     libXdmcp
     libxkbcommon
     epoxy
     at-spi2-core
     dbus
     icu
-    utillinux
-    libselinux
-    libsepol
-    libpsl
-    brotli
     libsignal-protocol-c
     librsvg
   ];