Removed Safari/Chrome workaround for system fonts

See https://code.djangoproject.com/ticket/34592

Author: matthiask

debug_toolbar/static/debug_toolbar/css/toolbar.css

@@ -1,10 +1,9 @@
 /* Variable definitions */
 :root {
     /* Font families are the same as in Django admin/css/base.css */
-    --djdt-font-family-primary: -apple-system, BlinkMacSystemFont, "Segoe UI",
-        system-ui, Roboto, "Helvetica Neue", Arial, sans-serif,
-        "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol",
-        "Noto Color Emoji";
+    --djdt-font-family-primary: "Segoe UI", system-ui, Roboto, "Helvetica Neue",
+        Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
+        "Segoe UI Symbol", "Noto Color Emoji";
     --djdt-font-family-monospace: ui-monospace, Menlo, Monaco, "Cascadia Mono",
         "Segoe UI Mono", "Roboto Mono", "Oxygen Mono", "Ubuntu Monospace",
         "Source Code Pro", "Fira Mono", "Droid Sans Mono", "Courier New",