I do not have Chrome In my computers and I do not want any extra tools here to spy my work.
Somebody mentioned, that they might be somehow connected to AI.
If so, I will delete them immediately. I do not want any AI in to my devices.
ADDENDUM:
My message was based on my view of Chrome and everything else connected to the advertising company Google.
After I got he answer from Arduino, I deleted the files and everything works OK.
And I do trust in Arduino company as I trust in every other company.
Arduino IDE is build on the open source Eclipse Theia Platform IDE framework, which in turn is built on the open source Electron application framework, which in turn uses the open source Chromium web browser.
These files are related to the Chromium component of the Arduino IDE application.
Yes.
Yes. For example, the "built-in" example sketches like Blink are bundled with the Arduino IDE installation and are not absolutely necessary (though they are useful). However, it is likely that all the unnecessary files don't consume any significant amount of disk space, so it isn't worth thinking about them.
Although the Chrome web browser is built on Chromium, these specific copies of the files are not used by Chrome. The Chromium component of the Arduino IDE application is completely self contained, separate from whatever standalone browser you might be using.
If you don't trust the Arduino company, then you should do a careful review of the Arduino IDE codebase:
you will also want to build the application yourself from the source code that you reviewed:
If you don't trust the Arduino company and are not able to effectively evaluate the source code, then please don't use the free open source Arduino IDE. If a company wants to "spy on your work", then you removing a few files that happen to have caught your eye is very unlikely to stop them.