To remove or disable, plugins, add-ons and extensions on your browser, please follow:
- Safari: Go to top menu > Safari Extensions.
- Chrome: Click 3 dots at the top right > select more tools > extensions.
- Firefox: Click 3 lines at top right corner > choose add ons.
From the options, any browser lists extensions/plugins/add-ons, and usually provides an on/off button to enable/disable them and also options to delete them in case not required.