Help on stopping Microsoft one for business

In the activity center, select more
Click Settings and on the Account tab, click Unlink this PC and then Unlink account.
By this way you can unlink your PC...

Type OneDrive in the search box , and then select OneDrive in the search results. Click Settings and on the Account tab, click Unlink this PC and then Unlink account.

Press the Windows key + R shortcut to open the Run command window.
Type in gpedit.msc.
Click the OK button.
Click on the Administrative Templates folder.
Double-click on the Windows Components folder.
Double-click on the OneDrive folder.
Double-click on Prevent the usage of OneDrive for file storage.
Click the option button beside the word Enabled.
Click on the OK button.
And that's all. OneDrive should now be disabled — you won't be able to open the application, but the icons are still going to be there.