Do a search on your drive & find the file named uTorrent.exe
Delete it
Unlike most other software / programs, uTorrent does not have a simple uninstall program built into it. Deleting the .exe file will take care of the program.
You will still have some registry entries. There are many registry cleaning progams that are free that would get rid of the entries. If your pc has some age on it, a registry cleaner might boost your speed (like if you've ever used TurboTax etc.)