Revert "ui.gadgets.buttons: workaround for windows gradient bug"
Revert "ui.gadgets.buttons: workaround for windows gradient bug"

This reverts commit 20a663ab0b2d9cca63e48cc144047e6495b80f44.

AlexIljin/factor,mrjbq7/factor,mrjbq7/factor,bpollack/factor,factor/factor,factor/factor,AlexIljin/factor,tgunr/factor,factor/factor,mrjbq7/factor,bpollack/factor,factor/factor,bpollack/factor,bpollack/factor,AlexIljin/factor,bpollack/factor,tgunr/factor,tgunr/factor,bpollack/factor,tgunr/factor,AlexIljin/factor,mrjbq7/factor,AlexIljin/factor,bpollack/factor,mrjbq7/factor,factor/factor,mrjbq7/factor,factor/factor,tgunr/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor