* gnu/packages/gnome.scm (gnome-control-center): Update to 42.3. [configure-flags]: Delete argument. [phases]: Use gexps. {patch-paths}: Use search-input-file. {no-polkit-magic}: Delete phase. [inputs]: Delete clutter-gtk, libcanberra and libsoup-minimal-2. Add gnutls and libadwaita. Move docbook-xsl to... [native-inputs]: ... here. Replace intltool with gettext-minimal. Remove hicolor-icon-theme. Sort.