How did I uninstall CUDA Toolkit 10.1 from Windows 7?

I have downgraded CUDA to 10.0 because Tensorflow 1.13 is not compatible with CUDA 10.1.

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devtalk.nvidia.com/default/topic/1027742/cuda-setup-and-installation/how-to-uninstall-cuda9-0-and-cudnn-under-win10-/post/5227508/#5227508

See also: How did I downgrade CUDA from 10.1 to 10.0 in Ubuntu 18.04?