ui: hide highlight toolbar and omnibar in print mode

packages/ui-default/components/highlighter/highlighter.page.styl

@@ -84,3 +84,9 @@ code
 
 .token.space:before
 	content: '\00B7'
+
+@media print {
+  .code-toolbar>.toolbar {
+    display: none !important;
+  }
+}

packages/ui-default/components/omnisearch/omnibar.page.styl

@@ -131,3 +131,8 @@
         margin-left: 10px;
     }
 }
+@media print {
+    .omnibar, .omnibar-toggle {
+        display: none;
+    }
+}