[ENH+PATCH] Remove the “[hide]” text when printing

I have a minor patch. When printing, I think the the ToC appearing is fine, it even has working hyperlinks in the PDF which is great. But, the “[hide]” text isn’t necessary. So, add this CSS to remove it:

@media print {
#toc_container span.toc_toggle {
display: none;
}
}

This doesn’t interfere with other “remove ToC when printing” CSS.