Hello enlusa,
First of all there is no single command like to make the interface to its default settings.
You need to go to the interface configuration mode and then
1. Undo the configuration by putting "no" in front of present command
2. There are some POE Configuration which will not be removed by no "command" and you need to set the default value to make it removed.
If you share the configuration, I can help you to configure the interface as default.
In case if you satisfied with answer - press kudos