I want to remove all plugins from Firefox, until now I have only had success with removing all addons. (I don't mind if I have to reinstall Firefox to achieve this)
How can I remove all of the plugins from Firefox?
It depends on what plugins you have installed. The default ones are in
You don't need to remove your plugins in Firefox to make it faster. I suppose that is the reason you need plugins removed.
You can either disable all plugins by going to Firefox menu in Tools - Addons - Plugins, and choose manually for each plugin to 'Never Activate' or you can choose 'Ask to Activate' instead for one or more of your plugins if you think you want to use them in the future.
You can also try this package called G-Alternatives which will allow you to change or completely remove certain plugins for Firefox like Flash player or Java. The package can be installed through the Software Center, but if you want to download and install right from the link I gave you don't forget to first choose your Ubuntu version (eg. 13.10 , 12.04 ....). You can easily harm your system if you don't know what you're doing so it is up to you to use G-Alternatives package or not.