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/animateCSS.js

@@ -1,10 +1,3 @@
-/* MagicMirror²
- * AnimateCSS System from https://animate.style/
- * by @bugsounet
- * for Michael Teeuw https://michaelteeuw.nl
- * MIT Licensed.
- */
-
 /* enumeration of animations in Array **/
 const AnimateCSSIn = [
 	// Attention seekers