Revert "gnu: totem: Enable parallel build."

This reverts commit e5f748a6c0.

gnu/packages/gnome.scm

@@ -3639,6 +3639,12 @@ for application developers.")
     (arguments
      `(#:glib-or-gtk? #t
 
+       ;; Disable parallel builds until
+       ;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=28813 is
+       ;; fixed.  Try enabling it when updating this package in case
+       ;; upstream has fixed it.
+       #:parallel-build? #f
+
        ;; Disable automatic GStreamer plugin installation via PackageKit and
        ;; all that.
        #:configure-flags '("-D" "enable-easy-codec-installation=no"