fixup! Bug 41600: Add a tor circuit display panel.

Bug 42699: Drop level="top" attribute.

browser/components/torcircuit/content/torCircuitPanel.inc.xhtml

@@ -3,7 +3,6 @@
        aria-labelledby="tor-circuit-heading"
        type="arrow"
        orient="vertical"
-       level="top"
        class="cui-widget-panel panel-no-padding"
        tabindex="0">
   <!-- Use same semantic structure as #identity-popup and #protections-popup