Firefox 150 profile questions

Updated to FF 150 today on Win 11 desktop. Q1: Can I remove '''Profiles''' from the FF toolbar which is located in between Bookmarks and Tools? Only need one profile on this PC. I tried to customize the toolbar but it won't let me drag Profiles off. Q2: For some reason my FF profile is now on C: even though I had previously moved it to D: to free up space on C: boot drive. So I created a new profile with exact same folder name on my D: drive today. In Profile Manager, I renamed the old profile on C: to "name.old and the new one on D: to "name.new". I set name.new as the default profile and it works properly after exiting and restarting FF. Now I want to delete the .old profile but FF won't left me, saying '''Can’t delete a profile that is linked to other profiles.''' There are only the .old and .new profiles listed. So how do I unlink .old so I can delete all of it to free up space on C: ?