Remove Custom Select (`<selectlist>`) from the data

When searching for Custom Select it shows: - https://caniuse.com/selectlist - https://caniuse.com/wf-customizable-select In https://youtu.be/TYRy1i1BYi8?si=mPsJOtdXG79FmMqI&t=1126 author Kevin Powell was _massively_ confused by the presence of the `selectlist` entry. I think it’s best that the `selectlist` simply gets removed, as it’s no longer being pursued.