remove all useless header comments (#3363)

see #3358

used command: `find ./ -type f -exec perl -i -0pe
's/\/\*\s*magicmirror.*?\*\/\s*//si' {} \;`

This is a first draft, I think we should preserve some of the comments.

js/utils.js

@@ -1,8 +1,3 @@
-/* MagicMirror²
- * Utils
- *
- * MIT Licensed.
- */
 const execSync = require("node:child_process").execSync;
 const Log = require("logger");
 const si = require("systeminformation");