Hello Peter,
Thanks for submitting a question about the comment form. What you see is part of the template architecture WordPress has provided with a default comment form. This would fall under the category of general WordPress development. The safest way to edit these elements is to do so through a child theme. In the child theme, you can delete those elements safely.
As an alternative, you can use the Custom CSS editor to “hide” the undesired elements:
The latter would look something like this:
.form-allowed-tags {
visibility:hidden;
}
However, I would caution against making the changes yourself unless you are familiar with HTML, CSS, and PHP. If not, it would be best to contact a developer. This is a relatively small modification, but done incorrectly it could cause errors on the page or a blank white screen.
Best,
Christopher M.