Once a hyperlink is in place it is not easy (impossible?) to remove.
As a user I would expect there to be an option to remove hyperlink, either on
the 'Insert' menu or within the 'Insert>Hyperlink' dialogue. There isn't.
As there isn't I expect (hope?) that if I highlight the linked text and selected
'Insert>Hyperlink' and I delete the link in the 'Target' field and 'Apply', then
the link would be removed from that text. It isn't.
I've seen other people mention that a workround is to apply the default style,
but this doesn't get rid of the link either for me.
File was originally an RTF document, but same is also true after saving as ODT.
New ODT document shows the same behaviour when I tried.