CKEditor 5 balloon editor - need to remove style attribute from all tags or just tags p and span inserted through copy paste

I use CKEditor 5 balloon editor - I want to remove style attribute from all tags or just tags p and span inserted through copy paste.

I tried this code from documenation:

editor.model.schema.register('span', {
    allowAttributes: '',
});

or

editor.model.schema.register('span', {
    allowAttributes: [],
});

Please help to solve. Thanks in advance.