I got tired of moving these files around by hand, so I decided to cook up a batch file that automates the process. You can grab it here: https://1drv.ms/u/s!Aig3l4twxcKyz3FszC9VS-22q6rK
Just run it, allow it administrator access, select the right folder and bam: no more sponsored search engines.
The administrator access is needed to mess around in Program Files (x86). If you have disabled UAC this prompt might be unnecessary, though I'm not sure.
If you're still on a 32-bit OS you'll have to edit the batch file (right click > Edit) and remove the (x86) from Program Files (x86).
The folder browser
The administrator prompt
Enjoy (and let's hope the devs don't find out about this).