Remove stylesheet retrofit

data/css.gresource.xml

@@ -3,7 +3,5 @@
   <gresource prefix="/com/github/stsdc/monitor">
     <file alias="monitor-light.css" compressed="true">monitor-light.css</file>
     <file alias="monitor-dark.css" compressed="true">monitor-dark.css</file>
-    <file alias="monitor-retrofit.css" compressed="true">monitor-retrofit.css</file>
-
   </gresource>
 </gresources>

data/meson.build

@@ -75,19 +75,11 @@ stylesheet_dark = custom_target(
     build_by_default: true
 )
 
-stylesheet_retrofit = custom_target(
-    'theme-monitor-retrofit',
-    input : './stylesheet/monitor-retrofit.scss',
-    output : 'monitor-retrofit.css',
-    command : sass_command,
-    build_by_default: true
-)
-
 css_gresource = gnome.compile_resources(
     'gresource_css',
     'css.gresource.xml',
     source_dir: 'stylesheet',
     c_name: 'as2',
-    dependencies: [stylesheet_dark, stylesheet_light, stylesheet_retrofit],
+    dependencies: [stylesheet_dark, stylesheet_light],
 
 )

src/Monitor.vala

@@ -75,7 +75,6 @@ namespace Monitor {
             });
 
             Appearance.set_prefered_style ();
-            Appearance.retrofit ();
 
 
             // Controls the direction of the sort indicators

src/Services/Appearance.vala

@@ -29,15 +29,4 @@ public class Monitor.Appearance : Object {
             }
         });
     }
-
-    public static void retrofit () {
-        if (Gtk.Settings.get_default ().gtk_theme_name.has_prefix ("io.elementary") ) {
-            debug ("Chewie, We are home.");
-        } else {
-            debug ("Retrofitting styles to make Monitor usable with a current theme.");
-            var provider = new Gtk.CssProvider ();
-            provider.load_from_resource ("/com/github/stsdc/monitor/monitor-retrofit.css");
-            Gtk.StyleContext.add_provider_for_screen (Gdk.Screen.get_default (), provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
-        }
-    }
 }