However, Impersonation must be disabled before uninstalling the module. 

Simply click on “Disable Impersonation” from any of Live Utilities module before uninstalling the module.

In a situation where the module is uninstalled without turning the impersonation off, your site will throw an error similar to the following one:

Could not load file or assembly 'Mandeeps.DNN.Modules.LiveUtilities' or one of its dependencies. The system cannot find the file specified.

The error can be resolved by updating the web.config – open the web.config in any text editor and remove one of the following line depending on your DNN Version: 

<add name="LiveUtilitiesModule" type="Mandeeps.DNN.Modules.LiveUtilities.Components.HttpModule,Mandeeps.DNN.Modules.LiveUtilities" />

or

<add name="LiveUtilitiesModule" type="Mandeeps.DNN.Modules.LiveUtilities.Components.HttpModule,Mandeeps.DNN.Modules.LiveUtilities" preCondition="managedHandler" />

Note: It’s strongly recommended to back up your web.config before making any manual changes.