Do you mean the <nowiki> tags? They make sure content between them is not parsed as wikitext. Like when I mentioned <nowiki>? That's a <nowiki> in <nowiki> tags. If you remove the <nowiki> tags, it parses all the wikitext in between them, which will potentially break functionality or appearance. <nowiki> tags are always used with a reason.
Uhm... who put those nowiki tags there? Usually, they're to prevent wikitext from clashing, but this just negates links. You can, you should, remove those.
You are the only editor to that page. Did you do something different where these tags appear? If not, report it to Special:Contact and be as thorough in your description and replication steps as you can be.
"Useless" <nowiki> tags are usually generated by one of the visual editors as a course of "normal" casual editing. Leaving them in will do nothing since there is nothing to not-parse between them. It is only the pairs with something "inside" them which might alter the wanted result/appearance of the page.
I believe something like AWB can be programmed to remove useless nowiki-pairs, but I'm not sure since I don't use AWB.