To remove your company accounts from your personal device here some quick guides For Outlook, and OneDrive

Outlook

• Open the Outlook Preferences window either from the top menu or by pressing cmd + , 
• Click into the Accounts section
• Locate and select your Audio Network Profile(s)
• Click on the - (minus) symbol in the bottom left hand corner to remove this profile.
• 
• Confirm Sign Out of the account
• Close the preferences window.

OneDrive

• Click into the OneDrive app in the tool bar at the top of the screen,
• In the settings cog select select preferences
• Click into the Account Tab,
• Locate the Audio Network account and select Unlink this Mac
• 
• Click on Unlink Account in the pop up to complete.