Q: I need to turn in a work MacBook and iPhone 6  that are using iCloud Keychain.  How do I disable or remove keychain and bookmarks in the Favorites Toolbar?

Hi 2NAtagr,

I gather you are turning in both your MacBook and your iPhone 6 so want to remove the keychain and bookmark info from both.

For iCloud Keychain, see 

Frequently asked questions about iCloud Keychain - Apple Support

which discusses turning off iCloud Keychain and removing data from the servers.

Regarding bookmarks, for the iPhone visit

Keep bookmarks - iPhone

where it points you to Bookmarks where you can edit and delete them.

On the MacBook, 

Safari 6/7 (Mavericks): Use bookmarks

tells how to delete bookmarks.

Of course you may want to check out these articles for what many do when they are giving up their devices.

What to do before selling or giving away your iPhone, iPad, or iPod touch - Apple Support

What to do before selling or giving away your Mac - Apple Support

Thank you for using Apple Support Communities.

Nubz