Cutting windows 7 support

[igor-hnizdo]

I will make a new issue for this.

Should we cut Windows 7?

It will greatly simplify the windows code (much less libusb custom patches, much less complex installation). But, windows 7 has still about 7% marketshare (compare to MacOS that has about 4-5 %).

[prusnak]

@igor-hnizdo we do not officially support Windows 7 as stated here: https://wiki.trezor.io/Operating_systems

Feel free to remove.

[igor-hnizdo]

oh nice!

...but I just realized the custom libusb code will need to still be there even on Windows 10, because it will show the device and try to connect to it even while the device is still installing . Now I remember it was that issue even on Windows 10 when Trezor is first connected.

So I will unfortunately need to keep the code there. But I can remove the installation of libwdi driver, as it is disabled on Windows 10.

[igor-hnizdo]

I was able to find the commits where we added the winusb custom code originally.

https://github.com/trezor/trezord-go/commit/f141e57ea219664b04812aff559e84621a288970 https://github.com/trezor/trezord-go/commit/dad2e755c976f9ed8926aacd8b683fe310a23419

Seems it's just for Windows 7. BUT, I am a bit too afraid to touch what works without really extensive testing on Windows 10, which I cannot do right now. So let's just drop the libwdi stuff. And maybe the driver deletion with devcon, that's also a bit stupid and just for Windows 7.

[prusnak]

So let's just drop the libwdi stuff. And maybe the driver deletion with devcon, that's also a bit stupid and just for Windows 7.

Ack