- Have you tried to remove it manually from the chrome panel ? You can find it with : More Tools > Extensions or directly by copying this in your search bar : chrome://extensions/ There you should find the extension, and you might be able to disable it.
- I don't know if you use chrome's synchrnonization, but it might be the reason why after each installation, those extensions comes back. You choose what information to sync, to do that, you can use this help page.
- If you wish, you can also reset you chrome configuration by using this help page.
If this extension still comes back, we will find an other way to erase it.
I hope it will helps you,