Is it possible to remove download image link?

[charlesroper]

I've just installed this plugin for my org and have had a request from a teacher asking if its possible to disable to the download image button. I can't see a way of doing this in settings.

In the code, it looks like I can remove these lines from the JS:

moodle-mod_lightboxgallery/yui/lightbox/lightbox.js

Line 304 in e2e948e

.append(create('<a id="bottomNavDownload" href="#"></a>'))

moodle-mod_lightboxgallery/yui/lightbox/lightbox.js

Lines 325 to 330 in e2e948e

	Y.one('#bottomNavDownload').on(CLICK, function (evt) {
	evt.halt();
	var active = this.get(ACTIVE_IMAGE);
	window.open(this.get(IMAGE_ARRAY)[active][0] + '?forcedownload=1', '_blank');
	}, this);

Is that correct? I'm a bit wary of hacking the code, and I don't know enough about Moodle plugin development to submit a PR with it done "properly" (i.e. adding a setting). Would this be difficult to add?

We're currently on Moodle 3.9.

Many thanks!