cs_themes: Finish removing tinycss support.

There's no need to check which one we have, CinnamonGtkSettings
hasn't supported it for a while now.

Author: mtwebster

debian/control

@@ -99,7 +99,7 @@ Depends:
  python3-pyinotify,
  python3-requests,
  python3-setproctitle,
- python3-tinycss2 | python3-tinycss,
+ python3-tinycss2,
  python3-tz,
  streamer,
  wget,

files/usr/share/cinnamon/cinnamon-settings/modules/cs_themes.py

@@ -2,6 +2,7 @@
 
 import os
 import json
+import tinycss2
 
 from gi.repository import Gtk, GdkPixbuf
 
@@ -267,12 +268,6 @@ def on_module_selected(self):
             widget = GSettingsSwitch(_("Show icons on buttons"), "org.cinnamon.settings-daemon.plugins.xsettings", "buttons-have-icons")
             settings.add_row(widget)
 
-            try:
-                import tinycss2
-            except:
-                self.refresh_choosers()
-                return
-
             settings = page.add_section(_("Scrollbar behavior"))
 
             # Translators: The 'trough' is the part of the scrollbar that the 'handle'