--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5653,19 +5653,16 @@ pref("webextensions.storage.sync.enabled
 pref("webextensions.storage.sync.serverURL", "https://webextensions.settings.services.mozilla.com/v1");
 
 // Allow customization of the fallback directory for file uploads
 pref("dom.input.fallbackUploadDir", "");
 
 // Turn rewriting of youtube embeds on/off
 pref("plugins.rewrite_youtube_embeds", true);
 
-// Don't hide Flash from navigator.plugins when it is click-to-activate
-pref("plugins.navigator_hide_disabled_flash", false);
-
 // Disable browser frames by default
 pref("dom.mozBrowserFramesEnabled", false);
 
 // Is support for 'color-adjust' CSS property enabled?
 pref("layout.css.color-adjust.enabled", true);
 
 pref("dom.audiochannel.audioCompeting", false);
 pref("dom.audiochannel.audioCompeting.allAgents", false);