As of Firefox 26.0, there is now a dropdown that appears whenever a website with a plugin is loaded, if the plugin is set to "Ask to Activate" in the Add-ons>Plugins menu. This dropdown can be dismissed, but will always reappear when such a page is loaded.

As useful as this is, I am already happy with the previous solution of having a plug-in icon appearing in the Address Bar (which is still available, making the dropdown redundant), so I don't really need an additional dialog appearing while I'm browsing. Is there any way to remove the dropdown?