OneDrive comes installed with windows 10, and whilst some may trust Microsoft with their personal, corporate and confidential data, I'm not one of those. So I want it gone and that's gone from windows explorer, gone from the task bar and just generally not there anymore.
So firstly, open up a command prompt. This can be done by pressing the Windows Key + R and type CMD or by typing CMD into the I'm cortana box by the start button and select cmd/Run Command or by going to Start /All Apps / Windows System / Command Prompt. You should wind up with a black box and some text in it saying something like "Microsoft Windows [Version 10.0.10586]" and so on.
Now with any luck its going to leave you with
C:\WINDOWS\system32>
If not then do one of the following depending on whether your running 32bit or 64bit windows 10.
32Bit: Type cd \windows\sysWOW64
64Bit: Type cd \windows\system32
Now, we are ready to remove one drive, and the command is:
OneDriveSetup.exe /uninstall
Once you've run this, you will probably get one of those suitably annoying UAC confirmation's and you should select YES.
And its done, its gone, no more OneDrive.
NOTE: With windows 10 refresh, microsoft re-install onedrive without notice so you will need to remove it once again by following the instructions above or a slightly more complete version available at GENSupport.net