Bug 1578086 - Update 'Why?' link cursor and color in protection track…

…ing panel. r=prathiksha

Differential Revision: https://phabricator.services.mozilla.com/D65958

--HG--
extra : moz-landing-system : lando

browser/components/controlcenter/content/protectionsPanel.inc.xhtml

@@ -118,7 +118,6 @@
             <hbox id="protections-popup-not-blocking-section-header" flex="1">
               <description id="protections-popup-not-blocking-section-description" flex="1" role="heading" aria-level="2">&protections.notBlocking2.label;</description>
               <label id="protections-popup-not-blocking-section-why"
-                     class="text-link"
                      onmouseover="document.getElementById(event.target.tooltip).openPopup(event.target);"
                      onfocus="document.getElementById(event.target.tooltip).openPopup(event.target);"
                      onmouseout="document.getElementById(event.target.tooltip).hidePopup()"