The Envato Toolkit and Market plugin is responsible for providing you with automatic backups, and updates for your theme and bundled plugins such as Revolution Slider, Visual Composer and LayerSlider.
Envato Toolkit is no longer supported or developed and should not be present in your theme. Please keep the plugin deactivated.
The Envato Market plugin is the evolution of Envato Toolkit and may be present on your site as a plugin, or integrated into your theme's activation page.
At this time, the Envato Market plugin and API keys are not used for theme update management or activation on Envato Hosted websites and should be left deactivated.