Not sure if the above people ever got answers.
Where I work, the solution is to publish the project, open up the lmsmanifest.xml file in Notepad, scroll down to the SECOND <title> tag, and right underneath it, paste in:
<adlnav:presentation>
<adlnav:navigationInterface>
<adlnav:hideLMSUI>continue</adlnav:hideLMSUI>
<adlnav:hideLMSUI>previous</adlnav:hideLMSUI>
<adlnav:hideLMSUI>abandon</adlnav:hideLMSUI>
<adlnav:hideLMSUI>exit</adlnav:hideLMSUI>
<adlnav:hideLMSUI>abandonAll</adlnav:hideLMSUI>
<adlnav:hideLMSUI>exitAll</adlnav:hideLMSUI>
<adlnav:hideLMSUI>suspendAll</adlnav:hideLMSUI>
</adlnav:navigationInterface>
</adlnav:presentation>
Any <imsss:sequencing> tag should go UNDER the code you're pasting in. Inserting XML code into wrong places will break the functionality required for the LMS so it may take some practice. Leaving this here for anybody who comes after. Naturally people don't have to hide all of navigational controls like above, but we do.