Hi Jen,

Outside of a portal page (the home page of a folder), currently there is no quick way to display a wiki page without its TOC.

There is one workaround:

If you're working on a file-based module, you should be able to include an HTML page that uses LABKEY.WebPart to display a web part that shows just the wiki main text. You'd use 'Wiki' as the partName.

The relevant docs:
https://www.labkey.org/download/clientapi_docs/javascript-api/symbols/LABKEY.WebPart.html
https://www.labkey.org/wiki/home/Documentation/page.view?name=webPartConfig

Your question was covered in greater detail here:
https://www.labkey.org/announcements/home/Developer/Forum/thread.view?rowId=4964

and resulted in the opening of this tracking bug:
https://www.labkey.org/issues/home/Developer/issues/details.view?issueId=11883

Thanks,
Elizabeth