From version 1.14.0
You can configure the features from the Admin main menu at Dynamic Content.
From the section Features you can enable or disable all features.
Before version 1.14.0
You can configure the features from the Admin main menu at Elementor > Dynamic Content.
From this Tab you can manage:
Documents (Page Settings);
For each voice in the list, you can find a short description and a link to the full documentation on the website.
Remember to save your configuration after checking/unchecking the features you want.
In the frontend of your site only the files related to the widgets and extensions active on that page will be loaded but it is advisable to enable only the features you need, to speed up the Elementor editor.